Material: Steel
Total Quantity:18pcs in total, 6pcs for each size.
Size:
4x7x2.5mm Ball Bearings (6pcs):
Inner diameter: 4mm
Outer diameter: 7mm
Thickness: 2.5mm

4x8x3mm Ball Bearings (6pcs):
Inner diameter: 4mm
Outer diameter: 8mm
Thickness: 3mm

7x11x3mmm Ball Bearings (6pcs):
Inner diameter: 7mm
Outer diameter: 11mm
Thickness: 3mm

The rc car ball bearing is made of stainless steel, with excellent wear resistance and high rolling contact fatigue performance.
Easy to install and remove.
Upgrade part for stock bearings or RC steering knuckle hub parts.
Compatible with Wltoys 1/14 144001 RC Car.
Also compatible with other rc car, please check the size before order.
Note: Please add the lubricating oil before using.