Product Description Size: 8inch Screw length: 170mm Screw diameter: 13mm Cross arm length: 195mm Total claw arm length: 135mm Maximum depth distance of reach: 98mm Distance between the inside of the arms(adjustable): 25-185mm Number of Claws: Two-claw Surface Treatment: Chrome plating Type: Claw Puller Size: 8 Inch Material: Chrome Vanadium Steel .