Sure-Strike Self Adjusting High-Security Strike Plate with Polished Brass Cover Plate Patent-pending pin system guarantees your deadbolts will slide perfectly into place every time Eliminate deadbolt sticking caused by shifting foundations, settling doorframes, swelling doors Two 3-1/2" steel screws and pin system housing extend into studs - strengthening the doorjamb Strike plate is much larger than standard and made of steel No more wrestling with hard-to-turn deadbolts - ideal for seniors or anyone with strength issues