Size:
Shaft diameter: 6mm/ 15/64"
Overall size: 37x13mm/ 1.46x0.51"
Material: carbon steel
Surface treatment: galvanized
Performance level: 4.8
Package included: 16pcs screws and 2pcs M6 Hex Wrenches.
It is easy to support wheels and bearings, and is easy to match with the male and female shafts of roller skates.
Minimized resistance, more durable than other parts made of plastic.