20PCS 3mm x 7mm x 3mm Double Shield 683ZZ Deep Groove Ball Bearing
Ball BearingGeneral Information：[1]Pre-Lubricated, Easy to maintain[2]Shields on BOTH SIDES of the bearing to keep dust out. Suitable for high speed operation[3]Made from Carbon Steel, durability and resistance to under heavy loads[4]ABEC Tolerance 1 (P0) for most general use[5]Size: 683ZZ (Inner Dia.=3mm, Outer Dia.=7mm, Thickness=3mm).
20 Pcs 6mmx17mmx6mm Double Sealed 606-2RS Ball Bearings High Carbon Steel Z1
Deep Groove Ball BearingProduct Details1.Made from High Carbon Steel, durability and resistance to under heavy loads2.Sealed on BOTH SIDES of the bearing to keep lubricant in. Suitable for complex environment3.Size: 606-2RS (Inner Dia.=6mm, Outer Dia.=17mm, Thickness=6mm)4.ABEC Tolerance 1 (P0), Z1 Noise Level for most general use5.Same As 606-2RS / 180016. Pre-Lubricated, Easy to maintain.