Winchester Model 70 anti-walk trigger and sear pins. Trigger pin is longer than the factory pin and uses an E clip to hold it in place. The sear pin replaces the factory pin and locks in place by tightening a set screw located in the head of the pin. The factory pins just slide into place and have a tendancy to walk out allowing the trigger and sear to misalign causing the rifle not to fire. Why take a chance on your hunt being ruined?