Vestil FL-LKH-5 Floor Locks; Wheel Diameter: 5 in; Retracted Height: 5.438 in; Extended Height: 6.63 in; Top Plate Size: 3.94 x 4.5 in; Bolt Hole Spacing: 2-9/16 X 3-3/16 (Inside) in; 3-3/16 X 3-11/16 (Outside) in; Top Plate Thickness: 0.19 in; Minim