[3# 38-24mm]

[2# 37-29mm]

[4# 31-22mm]

[5# 29-22mm]

[1# 40-32mm]

Features:

1# 40-32mm, inner diameter 32mm, outer diameter 40mm, steel ball diameter 4mm, commonly used in MTB and road bike front fork headsets

2# 37-29mm, inner diameter 29mm, outer diameter 37mm, steel ball diameter 4mm, commonly used in ordinary bicycle front fork headset

3 # 38-24 mm, inner diameter 24 mm, outer diameter 38 mm, steel ball diameter 8 mm, commonly used in childrens bicycles.

4# 31-22mm, inner diameter 22mm, outer diameter 31mm, steel ball 4.763mm, used for bottom bracket

5# 29-22mm, inner diameter 22mm, outer diameter 29mm, steel ball diameter 6.35mm, common bottom bracket on the market

6# 25mm, outer diameter 25mm, steel ball diameter 6.35mm, commonly used in rear wheel hubs

7# 21mm, outer diameter 21mm, steel ball diameter 4.763mm, commonly used in front wheel hubs

Specification:

Material: steel.
Quantity: 10 pieces.

Package includes:

Pack of 10 bicycle ball bearings