Application: This kind of ball bearing stainless steel ball is inlaid in the retainer design, It is a bicycle part to replace the crank bearing of the bicycle.
Material: This ball bearing retainer is made of steel, high quality, durable and high intensity.
Widely usage: This beads rack is for bike parts replacement, suitable for bike cranks, such as mountain bikes, children's bicycles, and stretch bicycles.

Specifications
Number of Balls: 9
Ball diameter: about 1/4 inch (6mm)
Inner diameter: about 1.14 inch (29mm)
External diameter:about 0.7 inch (18.4mm)
Material: Steel

Package Includes:
12 x Cycling Bearings

Notes:
Please Please measure the size and confirm whether this size is suitable for your bicycle before buying!!!!!!!!!!?.