10PCS 6701-2RS 12X18X4 Mm Miniature Double Rubber Sealed Deep Groove Ball Bearings Bearing Type:6701ZZ / 6701-2RS(Different manufacturers, the bearing mannequin (code) can be expressed differently.Such as 608Z=608ZZ=608-2Z=R2280ZZ=MR608Z=RV822, etc., all items of the name are an identical bearing, please order in keeping with the bearing size.)Bearing size:Inner diameter * outer diameter * width =12*18*4(mm)Abec1The dimension accuracy is lower than + 0.05mm and the speed is less than 500rpm, which is suitable for low velocity and low requirement environment. Such as: low speed transmission equipment, castors, children's cars, toy automobiles and so on.ABEC3The dimension accuracy is lower than + 0.01mm, the handle is smooth, the rotation velocity is lower than 6000rpm, the noise is low, and the provider life is long. It is acceptable for motors, toy models, automobiles, electrical tools, pneumatic tools, telecommunication equipment, health equipment, sports kit and so on.ABEC5The size accuracy is less than + 0.005mm, the manage is smooth, the speed is greater than 6000rpm, the noise is low, and the provider existence is long. It is appropriate for prime pace motors, excessive velocity models, instruments, precision equipment, high grade toys and so on.Model Number: 6701 2RSTorque Capacity: 0Surface Roughness: Ra 0.05Coatings: 2RSStructure: Ball bearingAre common parts: Standard partcolour:SilverMaterial:steelsize:12x18X4 mmPackage Contents:10 * 6701-2RS Bearing(with sealing ring)Only the above package content, different products aren't included.Note: Light shooting and varied reveals can cause the color of the object in the photograph a bit of assorted from the real thing. The size allowed error is +/- 1-3cm.