Sizes: 2 30mm, 2 40mm, 2 50mm, 2 70mm, 2 90mm, 2.5 80mm, 2 50mm (White), 2 19mm, 1.5 45mm. Silicone drive belt, with excellent material and good toughness, is one grade higher than rubber band. It can be used with plastic pulley to make toy models, transmission devices, etc.
