Linear Pillow Block Bearing Inside Dia 3/4 in Material Aluminum Alloy Accelerated Speed 450 fps Bearing Type Ball Body Width (In.) 1.88 in Bolt Size - Dimension A2 (In.) 1.88 in Dimension A (In.) 2.75 in Dimension B - Dimension B (In.) 4.5 in Dimension C - Dimension C (In.) - Dimension D (In.) - Dimension E - Dimension E1 (In.) 2.375 in Dimension E (In.) 3.5 in Dimension F1 (In.) 0.31 in