1、100% brand new and high-quality. 2、It can withstand the pressure of high speed operation. 3、The deep-groove rollaway nest is more steady while operating. 4、The material is bearing steel which is especially for bearings. 5、The double-sealed ball bearings provides a better running environment for bearing balls. Features: 100% brand new and high-quality. It can withstand the pressure of high speed operation. The deep-groove rollaway nest is more steady while operating. The material is bearing steel which is especially for bearings. The double-sealed ball bearings provides a better running environment for bearing balls. Specification: Material:Bearing Steel Holder Material:Steel Plate Scroll Column:1 Rollaway Type:Deep-groove Rolling Element:Ball Angel:15 Seal Cover:Double Sealed Product Usage:General Style(Optional) Size Weight 6800-2RS 10*19*5mm/0.39*0.75*0.2 in 60g/2.12oz 6804-2RS 20*32*7mm/0.79*1.26*0.28in 190g/6.7oz 6806-2RS 30*42*7mm/1.18*1.65*0.28in 260g/9.17oz 6807-2R 35*47*7mm/1.38*1.85*0.28in 209g/7.4oz 6808-2RS 40*52*7mm/1.57*2.05*0.28in 320g/11.29oz 6809-2RS 45*58*7mm/1.77*2.28*0.28in 410g/14.46oz Package List: 10*Deep Groove Ball Bearing Note: As different computers display colors differently, the color of the actual item may vary slightly from the above images.