STOMSKI RACING's version of this tool works on Vario intake cams on the GT2, TT, and GT3 engines. This tool replaces the factory tool P9653. Additional refinements to this tool ensure that while torquing the 16mm hex cam sprocket bolts, your tool is securely bushed and supported in the center of the tool, and thus will not slip off or round off the bolts. Black oxide finished hardened steel.