<br>Forged steel construction, for installation and removal of the valve spring, without removal of cylinder head from the engine. <br>Applicable for OHV & OHC gas or diesel engines <br>Fits most domestic & Import cars. compatible for Audi (4 &5 cylinder), compatible for BMW, compatible for Chevrolet, compatible for Chrysler, compatible for Ford, compatible for GMC, compatible for Honda, compatible for Lincoln, compatible for Mazda, compatible for Mitsubishi, Nissan, compatible for Porsche (924 & 928), compatible for Saturn, compatible for Toyota, compatible for Volvo, compatible for VW (4, 5, 6, cylinder) and other cars...(Please refer to your cars manual specifications)