Fits: Century Formula I, Duplex Tilt, 411 & 412 Wreckers Century Formula I, Duplex Tilt, Super Six & 500 Series Century Formula 6000, 600 Series Century Formula 6500, 600 Series REV A Century Metro I, Duplex Tilt (D.T.) Wheel Lift System Challenger 4700 Series (02/1995 - Current) Holmes 440 Series / DFT 400 (10/1994 - Current) Dimensions: 7.25" L x 3.25" W x 2.25" H Outside Diameter: 1.25"