Compatible with all kinds of boards:
Skateboard, Longboard, Cruisers, Inline Skates, Roller Skates, Kick Scooter, Mini cruiser, Trike, Fidget Spinner and other Wheeled toys etc.
Package Size: 3.15 * 3.15 * 1.18 inch
Weight: 0.26LB
NOTE:
Because these bearings are pre-filled with high-speed bearing oil,
so its speed will be relatively slow when it is rotated, but it is very smooth.