Cast steel claws with safety hooks to prevent accidental release. Lead screw manufactured from carbon steel hardened and tempered with 1/2" Sq. Dr. facility. Maximum opening 224mm. Features and Benefits • Hardened and tempered carbon lead screw • Cast steel claws with safety hooks to prevent accidental release • Suitable for most cars and light vans • Reversible for left or right handed use Contents 1 x Coil Spring Compressor Set (3 Piece)