- KELVIN® Pulley-Driven XL Mousetrap Racer™ Kit
- KELVIN® Racer Mold
- KELVIN® Racing Wheel with End Cap, Front
- KELVIN® Racing Wheel with End Cap, Front - Green/Yellow
- KELVIN® Racing Wheel with End Cap, Rear
- KELVIN® Racing Wheel with End Cap, Rear - Green/Yellow
- KELVIN® Racing Wheel, Front
- KELVIN® Racing Wheel, Front - Green/Yellow
- KELVIN® Ramp Racer™ Kit
- KELVIN® Ranch Dream House Design Challenge™
- KELVIN® Ranch Dream House Printed Cardstock
- KELVIN® Rat Racer® Economical Bulk Pack
- KELVIN® Rat Racer® Economical Kit
- KELVIN® RBTP™ Rubber Band TestPole™ Starter Set
- KELVIN® Reaction Tester Assembled Demo
- KELVIN® Reaction Tester Bulk Pack
- KELVIN® Reaction Tester Kit
- KELVIN® Reed Switch Motor Kit
- KELVIN® Reverse Engineering A Flashlight Bulk Pack
- KELVIN® Robotic Vehicle Advanced Kit w/ Wood Base
- KELVIN® Robotic Vehicle Kit w/ Cardstock Base
- KELVIN® Robotic Vehicle Kit w/ Large Plastic Circle Base
- KELVIN® Robotic Vehicle Kit w/ Large Plastic Rectangle Base
- KELVIN® Robotic Vehicle Kit w/ Small Plastic Circle Base
- KELVIN® Robotic Vehicle Kit w/ Small Plastic Rectangle Base
- KELVIN® Robotic Vehicle Kit w/ Wood Base & 2 Motors
- KELVIN® Robotic Vehicle Kit w/ Wood Base & 4 Motors
- KELVIN® Rocket Scientist™ Consumables Bulk Pack
- KELVIN® Rocket Scientist™ Launcher
- KELVIN® Rocketry Design Mini Module 1
- KELVIN® Rocketry Design Mini Module 2
- KELVIN® Rocketry Lab
- KELVIN® Roof Framing Bulk Pack
- KELVIN® Roof Framing Kit
- KELVIN® Roof Framing Kit with StiKutter™
- KELVIN® Rubber Band & Propeller Car Bulk Pack
- KELVIN® Rubber Band & Propeller Car Bulk Pack w/ Pre-Cut Wood
- KELVIN® Rubber Band & Propeller Car Class Pack
- KELVIN® Rubber Band & Propeller Car Kit
- KELVIN® Rubber Band & Propeller Car Kit w/ Pre-Cut Wood
- KELVIN® Rubber Band & Tissue Paper Glider Bulk Pack
- KELVIN® Rubber Band & Tissue Paper Glider Kit
- KELVIN® Rubber Band Build-A-Better Racer™ Designer Kit
- KELVIN® Rubber Band Build-A-Better Racer™ Economy Bulk Pack
- KELVIN® Rubber Band Build-A-Better Racer™ Economy Kit
- KELVIN® Rubber Band Glider Bulk Pack
- KELVIN® Rubber Band Glider Kit
- KELVIN® Rubber Band Plane Kit
- KELVIN® Rubber Band Powered Build-A-Better Racer™ Designer Bulk Pack
- KELVIN® Rubber Band Powered Plane Bulk Pack
- KELVIN® Rubber Band Powered Plane Kit
- KELVIN® Rubber Band-Powered Submarine
- KELVIN® Safety Propeller
- KELVIN® Security Systems HOP Kit
- KELVIN® Shipping Container House, 20 ft. Scale Model
- KELVIN® Shipping Container House, 40 ft. Scale Model
- KELVIN® Skyrider™ Balsa Glider Catapult Launcher
- KELVIN® Skyrider™ Balsa Glider Catapult w/ Glider Class Pack
- KELVIN® Skyrider™ Balsa Glider Class Pack
- KELVIN® Skyscraper Kit
- KELVIN® Small Geodesic Hot Air Balloon Kit
- KELVIN® SoFast® Electronics Mini Lab 1
- KELVIN® SoFast® Electronics Mini Lab 1+2+3
- KELVIN® SoFast® Electronics Mini Lab 2
- KELVIN® Solar Battery Charger with Light & Sensor
- KELVIN® Solar Boat Bulk Pack
- KELVIN® Solar Boat Kit
- KELVIN® Solar Cell & Battery Boat Bulk Pack
- KELVIN® Solar Cell & Battery Boat Kit
- KELVIN® Solar Dragster Bulk Pack
- KELVIN® Solar Dragster Kit
- KELVIN® Solar Energy Farm
- KELVIN® Solar Energy House Kit
- KELVIN® Solar Energy House Lab
- KELVIN® Solar Energy House Template
- KELVIN® Solar Monster Truck Bulk Pack
- KELVIN® Solar Monster Truck Kit
- KELVIN® Solar Racer Bulk Pack w/ Plastic Base
- KELVIN® Solar Racer Bulk Pack w/ Wood Base
- KELVIN® Solar Racer HP1 Kit
- KELVIN® Solar Racer I Kit
- KELVIN® Solar Racer II Kit
- KELVIN® Solar Racer III Kit
- KELVIN® Solar Racer Kit w/ Plastic Base
- KELVIN® Solar Racer Kit w/ Wood Base
- KELVIN® Solar Sedan Bulk Pack
- KELVIN® Solar Sedan Kit
- KELVIN® Solar Station - Assembled
- KELVIN® Solar Station Kit
- KELVIN® Solar Zip Racer
- KELVIN® Soldering Bin Filler
- KELVIN® Sound Activated Circuit Assembled Demo
- KELVIN® Sound Activated Circuit Bulk Pack
- KELVIN® Sound Activated Circuit Kit
- KELVIN® Sound Effects v2 Kit
- KELVIN® Sound Level Meter HOP Kit
- KELVIN® Sound to Light Kit
- KELVIN® Speedy Brain Kit
- KELVIN® Spinning Motor Kit
- KELVIN® Spring Making System
- KELVIN® StiKutter™ Bridge & Tower Kit, Level 1
- KELVIN® StiKutter™ Bridge & Tower Kit, Level 2
- KELVIN® StiKutter™ for Balsa
- KELVIN® Strobe Light Bulk Pack
- KELVIN® Strobe Light Kit
- KELVIN® Stroboscope Kit
- KELVIN® Sturg DC Motor Bulk Pack
- KELVIN® Sturg DC Motor Kit
- KELVIN® Submarine Design Challenge
- KELVIN® Suez Canal Bridge Bulk Pack
- KELVIN® Suez Canal Bridge Kit
- KELVIN® Sun Photometer HOP Kit
- KELVIN® Super Capacitor Charging Unit
- KELVIN® Super Capacitor Hovercraft Bulk Pack
- KELVIN® Super Capacitor Hovercraft Kit
- KELVIN® Super Capacitor Plane Bulk Pack
- KELVIN® Super Capacitor Plane Kit
- KELVIN® Super Economy Gear Set
- KELVIN® Super Economy Gear Set, Green
- KELVIN® Super Lightweight Wheels
- KELVIN® Super Racer™ 20 F Bulk Pack
- KELVIN® Super Racer™ 20 F Kit
- KELVIN® Super Racer™ w/ 1 10 F Capacitor
- KELVIN® Super Racer™ w/ [2] 10 F Capacitors
- KELVIN® Swing Unit Kit
- KELVIN® Tabletop Bridge & Tower Tester
- KELVIN® Technology Competition Certificates
- KELVIN® Technology Design Portfolios
- KELVIN® Temperature Control Assembled Demo
- KELVIN® Temperature Control Bulk Pack
- KELVIN® Temperature Control Kit
- KELVIN® Testing Track
- KELVIN® The NEXT Maglev Racer™ 1-Lane Track w/ Panel Meter
- KELVIN® The NEXT Maglev Racer™ Adv. Vehicle Keel Bulk Pack
- KELVIN® The NEXT Maglev Racer™ Adv. Vehicle Keel Kit
- KELVIN® The NEXT Maglev Racer™ Basic Vehicle Keel Bulk Pack
- KELVIN® The NEXT Maglev Racer™ Basic Vehicle Keel Kit
- KELVIN® The NEXT Maglev Racer™ Track, 2-Lane
- KELVIN® The NEXT Maglev Racer™ Two Level Track
- KELVIN® The Wright Wind Tunnel™
- KELVIN® The Wright Wind Tunnel™ Package
- KELVIN® Thunder™ 1-Lane Launcher for No CO2 Dragsters
- KELVIN® Thunder™ 1-Lane Track for No CO2 Dragsters
- KELVIN® Thunder™ No CO2 System w/ UNO Class Motion Timer™
- KELVIN® Tiny House Kit w/ Pre-Cut Balsa Wood Framing
- KELVIN® Totem Pole U-Design Challenge
- KELVIN® Touch Control Circuit Assembled Demo
- KELVIN® Touch Control Circuit Bulk Pack
- KELVIN® Touch Control Circuit Kit
- KELVIN® Tower Crane Kit
- KELVIN® Tower Crane Team Pack
- KELVIN® Towers & Skyscrapers Bulk Pack
- KELVIN® Towers & Skyscrapers Kit
- KELVIN® Traditional Kite Class Pack
- KELVIN® Trebuchet Bulk Pack
- KELVIN® Trebuchet Kit
- KELVIN® Troubleshooting Trainers™ Complete Set
- KELVIN® Tug-of-War Competition Vehicle Starter Pack
- KELVIN® Tug-of-War Reusable Vehicle
- KELVIN® Two-Story Dream House Design Challenge™
- KELVIN® Two-Story Dream House Printed Cardstock
- KELVIN® Universal Maglev Base Bulk Pack
- KELVIN® Universal Maglev Base Class Pack
- KELVIN® Universal Maglev Base Kit
- KELVIN® Universal Motor Mount
- KELVIN® UNO Class Timer™, 1 Lane
- KELVIN® Variable Power Supply w/ Polarity Box
- KELVIN® Vehicle Mold
- KELVIN® Vehicle Parts Bulk Pack
- KELVIN® Vehicle Test Station
- KELVIN® Water Level Meter Assembled Demo
- KELVIN® Water Level Meter Bulk Pack
- KELVIN® Water Level Meter Kit
- KELVIN® Wheel of Fortune Assembled Demo
- KELVIN® Wheel of Fortune Bulk Pack
- KELVIN® Wheel of Fortune Kit
- KELVIN® Wheels Bin Filler
- KELVIN® Whiskers Sensor Kit
- KELVIN® Wide Wind Tunnel™
- KELVIN® Wide Wind Tunnel™ System
- KELVIN® Wind Farm™ Data Collection
- KELVIN® Wind Turbine Blade Shape Design Kit
- KELVIN® Wind Turbine Design Parts
- KELVIN® Wind Turbine Economy Kit
- KELVIN® Wind Turbine Hardware Bulk Pack
- KELVIN® Wind Turbine Junior Design Challenge
- KELVIN® Wind Turbine Lab
- KELVIN® Wind Turbine Lab Consumables
- KELVIN® Wind Turbine Student Lab
- KELVIN® WinData™ 3 Data Collection
- KELVIN® WinData™ 6 Data Collection
- KELVIN® Wing Design Kit
- KELVIN® Wired Manual Controller
- KELVIN® Wireless Microphone Assembled Demo
- KELVIN® Wireless Microphone Bulk Pack
- KELVIN® Wireless Microphone Kit
- KELVIN® Wood Mini Bin Filler
- KELVIN® Worm Gear
- KELVIN® Worm Gear Car Kit
- KELVIN® Wright Bros. Foam Plane Bulk Pack
- KELVIN® Wright Bros. Foam Plane Kit
- KELVIN® Wright Bros. Replica Plane Bulk Pack for PowerPole™ 2010
- KELVIN® Wright Bros. Replica Plane Kit
- KELVIN® Odyssey™ Elementary Wind Turbine Challenge
- Keyhole Saw
- Keypad Switch
- Knife Switch - DPDT, BP
- Knife Switch - DPDT, ST
- Knife Switch - DPST, BP
- Knife Switch - SPDT, ST
- Knife Switch - SPST, ST
- Krazy Glue
- Krypton Spectrum Discharge Tube
- Lab Thermometer, Partial Immersion
- Landing Gear Wire
- Landing Gear Wire Bulk Pack
- Large Gear Box
- Laser Pointer Activities
- Latch
- Launch Lug Pack
- LCD Display Module for Arduino
- LED & Key Display Module for Arduino
- LED Anode Display, 14-Pin
- LED Display, Anode 10-Pin
- LED Holder, 5mm
- LED Tricolor Module for Arduino
- Lettuce Seeds
- Lever Switch - SPDT, 10A
- Lever Switch - SPDT, 6A
- Lever Switch - SPST
- Light Source
- Lightweight Control Wire
- Linear Taper Potentiometer, 100K Ohm
- Linear Taper Potentiometer, 10K Ohm
- Linear Taper Potentiometer, 1K Ohm
- Linear Taper Potentiometer, 500 Ohm
- Linear Taper Potentiometer, 500K Ohm
- Linear Taper Potentiometer, 50K Ohm
- Linear Taper Potentiometer, 5K Ohm
- Linear Taper Potentiometer, 5M Ohm
- Livewire, Educational
- Livewire, Educational, 5-User Network
- Livewire, Educational, 5-User Network Extension
- Livewire, Hobbyist
- Livewire, Professional
- Lock Nut
- Lock Washer, #10
- Lock Washer, #4
- Lock Washer, #6
- Lock Washer, #8
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