TMS Auto Interchangable Compressor Extractor Tool Kit Set For Car MacPherson Fork Strut Coil Spring Material: Carbon Steel. Package included: 1 X Coil Spring Compressor Extractor Set.(included 3 sets of jaws). 1 x User manual. 1 x Extension Bracket. 1 x Hex Tool. 1 x Blow Molded Case. Features: Safest way to change coil springs. Supplied With 3 pairs of different Sized Interchangeable Jaws(65mm-125mm, 88mm-160mm,126mm-212mm) for a wide range of vehicle applications. Comes with a extended bracket. Interchangeable Jaws,Secured With Bolts,they are easily changed. Jaws with safety lip locks the spring in place during compression. Shear Pin To Prevent Overload. Comes with a carrying case,easy to carry it. Specifications: Jaws specifications: Golden jaw: 2 1/2inch-5inch (65mm-125mm). Black jaw: 3 1/2 inch-6inch (88mm-160mm). Silver jaw: 5inch-8 1/2inch(126mm-212mm). Case overall dimensions: 20inch(L) x 16inch(W) x 4 3/4inch(H). Maximum Jaw Opening: Approx 12-1/2 inch.