General Purpose Floor Lock, 8 in For Caster Mounting Height, 7 in Floor Lock Retracted Height, 10 5/8 in Floor Lock Extended Height, 6 in For Wheel Dia., A Mounting Plate Bolt Hole Pattern, 5 in x 7-1/4 in Mounting Plate Size, Steel, 3-1/8 in x 5-3/8 in Inside Bolt Hole Spacing, 4 in x 6-1/4 in Outside Bolt Hole Spacing