uxcell 10 Pcs 12x28x8mm Metal Shields Deep Groove Radial Ball Bearings 6001Z Product Name : Deep Groove Ball Bearing;Model No. : 6001ZZ Inner Diameter : 12mm / 0.47";Outer Diameter : 28mm / 1.1" Height : 8mm / 0.331";Color : Silver Tone Material : Metal;Net Weight : 212g Package Content : 10 Pcs x Deep Groove Ball Bearings