Inclined hole carpenter special clamp, strong clamping force, is suitbale for wood plate clamping operation. Made of high quality metal material, so no deform when clamping workpiece. Adopted the process of high temperature quenching, with high hardness. It is recommended to use this pocket hole joints fixed clamp matched with positioning drill.Deepen the thread, when tightening. No block stuck phenomenon. Punch positioning to prevent the drilling angle from shaking.