1.608rs bearing is black double rubber sealed deep groove 8x22x7mm. 2.The small bearing has sealed rubber covers on both sides, Effectively prevent dust and debris from entering; Protect lubricating oil against loss. Reduce bearing noise to ensure normal operation. 3. The bearings is made of high quality bearing steel, it has durability and resistance to rust and has uniform hardness and wear resistance, high temperature resistance. 4. Widely used in precision instruments,CNC,micro motor,skateboards and scooters,3D Printer,motors,roller,blade skates And long boards,lead screw stabilizer (Ender 3),some filament spool holders and toys,music box gearbox,Slide drawers,garden windmill spinners, oller & inline skate etc industries. 5. If you have any questions after purchase, please contact us in time. We will serve you wholeheartedly. Cooswai is a factory with a history of more than ten years. The company's main stainless steel hardware accessories, various mechanical and electrical bearings. High cost performance, excellent quality, won the trust of our customers. 608-2rs bearing is black double rubber sealed deep groove 8x22x7mm.The bearings is made of high quality bearing steel, it has durability and resistance to rust and has uniform hardness and wear resistance, high temperature resistance. Widely used in precision instruments,CNC,micro motor,skateboards and scooters,3D Printer,motors,roller,blade skates And long boards,lead screw stabilizer (Ender 3),some filament spool holders and toys,music box gearbox,Slide drawers,garden windmill spinners, oller & inline skate etc industries.