General Purpose Floor Lock 8 3/16 in For Caster Mounting Height 7 in Floor Lock Retracted Height 8 13/16 in Floor Lock Extended Height 6 in For Wheel Dia D Mounting Plate Bolt Hole Pattern 3-7/8 in x 6-1/4 in Mounting Plate Size Steel 2-1/2 in x 5 in Inside Bolt Hole Spacing 2-1/2 in x 5 in Outside Bolt Hole Spacing