Eforstore 608RS ABEC-7 8x22x7mm Carbon Steel Rubber Bearings For Skateboard Scooter Roller Skate Long Board etc Set of 8 Pcs Material: Carbon Steel,Colrful rubber cap Size: 8x22x7 mm (Outside Diameter: 22 mm,Inside Diameter: 8 mm,Bearing Width: 7 mm ) Stable, durable, anti-corrosion, wear-resistant, dustproof and stainless High Speed Nylong Ball Retainer for Greater Strength and Speed Suitable for skate board, long board, penny board, roller skate and scooter etc