Deep Groove Custom Printed 608 Skateboard High Speed Longboard Roller Skate Bearings Yongkang Meshine Industry & Trade Co., Ltd. Base Info Description Product nameSkateboard BearingMaterialchrome steelApplicationskateboardModelMS2303-1Size22*8*7 mmCertificationCE, EN13613 ,EN7Seals TypeRubber SealsRetainer materialHigh Speed Nylon CageLimiting SpeedGrease Lubrication: 34,000 RPMGradeABEC 11 Pre:Pillow Block Bearing UC208 Bearing with P208 Housing Mounted Ball Bearing Units Next:Spherical Roller Bearing Nu224m/32224h 32224EQ Tnj224e/42224e Nj224L/2224L Nj224m/42224h 62224h Nup224m/92224h Rnu224m/292224h Nu3224m/3032224h Extile, Printing