Linear Pillow Block Bearing Inside Dia 1/2 in Material Stainless Steel/Polymer Cage Bearing Type Ball Body Width (In.) 1.375 in Bolt Size #6 Color Silver/Black Dimension a 0.687 in Dimension A (In.) - Dimension B 2 in Dimension B (In.) - Dimension C 3.5 in Dimension C (In.) - Dimension D (In.) - Dimension E 1.688 in Dimension E (In.) - Dimension F 2.5 in Dimension F1 1 in