Linear Pillow Block Bearing Inside Dia 12 mm Material Aluminum Alloy Bearing Type Ball Body Width (In.) 43 mm Bolt Size - Color Silver Dimension a 43 mm Dimension A1 21.5 mm Dimension A (In.) - Dimension B 76 mm Dimension B (In.) - Dimension C - Dimension C (In.) - Dimension d 12 mm Dimension D (In.) - Dimension E 56 mm Dimension E1 32 mm Dimension E (In.) -