X Autohaux 4pcs/Pack Bicycle Ball Bearing Retainer Stainless Steel Bike Ball Bearings for MTB Bicycle Headset/Bottom Bracket

Notice:

There are 9 types of bearing retainers here.

Number 1, 20.5mm*7 balls, are commonly used in bicycle front hub;

Number 2, 25mm*7 balls, are commonly used in bicycle rear hub;

Number 3, 29.5mm*9 balls, are commonly used in bottom brackets of mountain/road/ordinary bike;

Number 4, 31mm*9 balls, are commonly used in splitted bottom brackets of children bike;

Number 5, 37mm*7 balls, are commonly used in cranks of Children bike;

Number 6, 37.2mm*16 balls, are commonly used in front fork headset of ordinary bike;

Number 7, 37mm*20 balls, are commonly used in headset of some electric bikes;

Number 8, 40mm*20 balls, are commonly used in front fork headset of mountain bike, just compare it with number 6;

Number 9, 44mm*9 balls, are commonly used in some old-fashioned bikes.

Description:

This kind of ball bearing  stainless steel ball inlaid in the retainer design.

Can be an ideal replacement for the bicycle or racing bicycle or mountain bike.

Before purchasing, please confirm whether the size of the accessories of your bike is matched with this product.

Package Include:

4 x Ball Bearing Cage