Packing: 6pcs
Material: steel
Size: ball diameter 6.35mm(1/4in), OD:1.14 inch/ 29mm, ID:0.7 inch/18mm
High strength, sturdy, anti-corrosion, durable, not easy to fade, long service life
Suitable for bicycle bottom bracket, can provide consistent and reliable rotation for your bicycle wheels
For bike parts replacement, suitable for bike cranks, such as 26" Next brand mountain bike, Kent Genesis bike, Kid Schwinn S5230 bike
Suitable for bike cranks, such as children's mountain bikes, children's bicycles, low-speed bicycles, elastic bicycles, etc.

Attention:
Please measure the size before you buy to make sure this size is suitable for your bike