4-Pack 20mm Linear guide Shaft + Ball Bearings for Stamping Forming Dies Parts Outer Diameter - 3 1/8 inch (3.125") NBT-1 1/2" SS is a

NBT-1 1/2" SS is a heavy duty ball transfer unit

outer diameter is 100mm and the width is 25mm

also 6019ZZ bearing is pre-lubricated with grease

Chrome Steel with snap ring groove + a snap ring

LR5204NPPU Track Roller Double Row Bearing

4-Pack 20mm Linear guide Shaft + Ball Bearings for Stamping Forming Dies Parts Outer Diameter - 3 1/8 inch (3.125") NBT-1 1/2" SS is aSet of 4 20mm Linear guide Shaft + Ball Bearing for Stamping Forming Dies Parts Set of 4 20mm Linear guide Shaft Ball Bearing for Stamping Forming Dies set includes 4 linear shafts Set of 4 20mm Linear guide Shaft + Ball Bearing for Stamping Forming Dies set includes 4 linear shafts, the diameter of each Shaft is 20mm and the length of each shaft is 7. 875" Inch (200mm). the shafts are chrome Steel. 20mm Stroke Linear guide Bearing Specs: 20mm Linear