General Purpose Floor Lock 6 1/4 in For Caster Mounting Height 8 3/4 in Floor Lock Retracted Height 9 3/4 in Floor Lock Extended Height 8 in For Wheel Dia B Mounting Plate Bolt Hole Pattern 3-15/16 in x 4-9/16 in Mounting Plate Size Steel 2-9/16 in x 3-1/4 in Inside Bolt Hole Spacing 3 in x 3-5/8 in Outside Bolt Hole Spacing