Designed for horizontal and single point lockers with multiple users who are assigned access for short time periods, the Master Lock No. 1710 Built-In Keyed Lock features concealed mounting and a rugged steel case and fits both left-hand and right-hand hinged doors. With a manual deadbolt locking mechanism, these locks provide higher security and are ideal for ventilated and open mesh lockers. Two keys are provided for each lock. Keying options and ADA compliant models available. Master Lock® Deadbolt Keyed Lock, Built-In Manual, 2 in W Faceplate, Alike Keying, 5 Pins, Tumbler Cylinder, 2 Keys, Steel, Silver