Linear Pillow Block Bearing Inside Dia 3/4 in Material Aluminum Alloy Bearing Type Ball Body Width (In.) 1.88 in Color Silver Dimension a 2.75 in Dimension A2 1.88 in Dimension B 4.5 in Dimension E 3.5 in Dimension E1 2.375 in Dimension F 1.56 in Dimension F1 0.31 in