This pack for six teams includes: basic instructions, 1/8 x 1/8 x 12 in. balsa,  pulley packs (4 pulleys per package),  motors, and  motor holders. Grades 7 and up. Kit.
The teacher must supply glue (any type such as hot glue guns or wood glue), thin sheet metal (for block and tackle), nuts and bolts or pins and nails (for pulley axle). Not laser cut or pre-designed.
PLEASE NOTE: DC voltage power source required (see 841051).