A pair of wall-mounted toilet mounting bolts. This set contains all the necessary hardware to securely attach your toilet to the wall. Installation principle: Before tightening the screw, no installer is required to hold the pan. The fastener can automatically pre-lock and hold the pan to prevent it from falling. Easy to use. Simple installation and effortless operation. Installation method: Insert the metal mounting bolt into the outer casing, then tighten the screw to secure the metal bolt.