Perfect for vehicles where reduced weight and friction are important – like a solar car. Lightweight and versatile,, these wheels weigh in at 2.9 grams without the adapters.
2-1/2 in. diameter wheels fit a 3mm axle or use the adapters to fit a 2mm or 1/8 in. dia. axle.
Set includes:  wheels,  2mm adapters and  1/8 in. adapters.