Descriptions :
10pcs 623-ZZ 3x10x4mm Deep Groove Ball Bearings Miniature Bearings
A popular size that could be used in many RC Cars and Trucks

Specifications:
Type:  623-ZZ
Materal: Steel， Metal
Size: 3x10x 4mm
Inner Diameter: 3mm
Outer Diameter: 10mm
Thickness: 4mm

Package included:
10X 623-ZZ Ball Bearings