Cables Length: All cables are about 2m in total length, and the length can be cut easily to match your bikes well. 8pcs donuts set (24pcs): these donuts come in 8 sets, and each set contains 3pcs, 24pcs in total and they fit for 1.2mm 1.5mm diameter cables, please wear them on cables when in use. Uses: Durable metal slick ropes provide better braking power and smooth operation. This bicycle inner cable set is suitable for mountain bikes, suitable for forward or reverse gears and brakes. Useful Donuts and Caps: Donuts help protect your bike from lacquer and caps help prevent the end of the cable from being scratched. International products have separate terms, they are sold from overseas and may differ from local products, including fit, age and language of product, labeling or instructions. .