This product is a combo set of entry knob and single cylinder deadbolt. The entry knob features adjustable latch that fits all standard doors types. With ANSI Grade 3 standard, the product is suitable for exterior residential door preparations. The knob can be locked or unlocked by key on exterior or turn button on interior. The single cylinder deadbolt features adjustable latch that fits all standard doors types. This product is suitable for exterior door where firmer, stronger, more secure locking is needed. The single cylinder deadbolt can be locked or unlocked by key on exterior or turn button on interior.