Gear and Pulley Puller, Spread – Minimum 1 1/2 in, Spread – Maximum 4 1/4 in, Forcing Screw Size 5 1/2 in, Cap Screw Size – Maximum 3/8 in, Application Removing Timing Gears, Fan Pulley, Harmonic Balancers and Other Parts Having Tapped Holes, Includes (2) Hex Head Cap Screws 3/8 in-16 x 3 in Long.