The PYR-SL-TI features a 12.7mm (1/2”) slide off center, with closed ends on the base and can be oriented for either AP or ML slide. This component is manufactured of titanium and is compatible with the European 4-hole pattern. The slide is locked into place by tightening the 4 adjustment set screws on the interfacing connection component. If attaching to a PDI lock, torque the M6 bolts to 12Nm (9ft lb). US Pat No. 6,033,440 and 6,231,618