Description Direct replacement, maintenance-free design. These durable bearings are the ones for you. If you are a fan of roller skating, you can choose one for you, it is very helpful. Generally applicable to skateboard, roller skating, scooter. Suitable for new skateboarders to practice. Features -Color: Silver-Material: Metal-Size: 2.20X2.20X1.00cm/0.86X0.86X0.39in-Metal bearing for guaranteed high speeds and minimal friction. It is very useful.-The surface is rigorous and smooth with high rotation speeds and is not easy to be hot.-Made of metal with high protection and long durability, they are strong and durable.-This type of bearing usually needs to be lubricated with grease fittings, which will make it rotate more smoothly.-They feature high load bearing, low noise and high speeds. Choice for skating.Packing list: 10 x Bearings