1.[Product Feature]The combo pack includes a lockset featuring a keyed entry knob coupled with a single-cylinder deadbolt, which operates using a key from the outside and a thumb turn mechanism from the inside, providing dual-level security and convenience. 2.[Wide Application]Suited for use on exterior and front doors where key-entry and security are paramount, this product is specifically crafted to complement the modern aesthetic of interior and exterior/entry doors in both commercial and residential settings, seamlessly blending functionality with style. 3.[ & Resistant]Conformed with ANSI Grade 3 Security, Exceeds 250,000 cycles(compared others only 180,000). The exterior door lockset is made of premium zinc alloy and stainless steel of splendid rust protection and anti-oxidation , finished with electroplating technology for anti-corrosion. Electroplating paint finish gives you a perfect use. 4.[]Quick and easy DIY installation, no need for professional door fitters – just a screwdriver and a few minutes to set up. Additionally, the door knob deadbolt set is thoughtfully designed to be versatile, compatible with both left-handed and right-handed doors, ensuring seamless integration into your existing setup without any constraints.