ITEM NAME:2Pcs 16mm SBR16UU Aluminum Open Linear Router Motion Bearing Solide Block U K7Z5 2Pcs 16mm SBR16UU Aluminum Open Linear Router Motion Bearing Solide Block U K7Z5 1.Made from aluminum material.Smooth moving, low friction, high rigidity and long life.automotive components, pumps, and machinery.Low noise and high speed electric motors, construction machinery 2.The universal Open Linear Motion Ball Bearing is great for you to replace the damaged Ball Bearings in your devices to improve them efficiency and save energy. 3.These linear bearings use recirculating balls in order to provide smooth, precise movement. 4.Additionally these linear bearings have double rubber seals to keep dirt, dust and debris out of the inner workings for a long and maintenance free life. 5.Widely used in home appliances, industrial, low noise and high speed electric motors, construction machinery, automotive components, pumps, and machinery. Specifications Product Name: Linear Bearing Weight: 286g Model: SBR16UU Colour:Silver Material:Aluminum base alloy + bearing steel Size:45 x 45 x 32mm Mount Hole Dia.: 4mm Mount Hole Distance: 32 x 30mm(L*W) Inside Diameter: 16mm Package Contents: 2x SBR16UU Bearing Block.Model: SBR16UU. 2x SBR16UU Bearing Block. Material:Aluminum base alloy + bearing steel.