This tool is designed to remove or install center-lock wheel nuts on Porsche 997, 991, GT2 and GT3 models. Drive 3/4 inch, tightening torque if necessary above 500Nm. •Not for use with impact ratchet or impact wrench. Fits: Porsche 991.997 : 2012-2016 Porsche 991.997 : TURBO 2014-2016 Porsche 991.997 : GT3 2014-2016 Material: Aluminum