5Pcs SMR52ZZ CB Ceramic Bearing ABEC7 2X5X2.5 Stainless Steel Hybrid Ceramic Ball Bearing SMR74ZZ CB 4x7x2.5 SMR115ZZ CB 5x11x4

Item: Stainless Steel Hybrid Ceramic Ball Bearing
Type: Deep Groove
Bearing Material: 440C Stainless Steel
Ball Material:Ceramic Si3N4
Lubrication: Self Lubricated ( NO Grease)
Closures: Metal Shielded(ZZ)
Magnetic: little
Hardness: 58HRC
Corrosion Resistance: General
Clearance: C0
Bearing Grades: ABEC 7