The Design House C-Series 2-Way Latch Entry Door Handle is finished in satin chrome and designed for left or right hand doors. The handle adds a touch of professionalism to any home or office. This handle fits the two most common backsets in the U.S. (backset is the distance from the edge of the door to the centre of the bore hole) which are 2-3/10cm and 2-3/20cm . The 1/5.1cm bolt throw is made of stainless steel and does not budge once in place. With privacy in mind this product accepts a key on one side of the lock but is operated by a push-button knob on the other side. Entry knobs are often used on front doors and back doors. Use this knob on standard 1-3/20cm and 1-3/10cm thick doors. This product has a 2.5cm by 2-1/10cm square corner face plate and 5-pin security removable core. If you're preparing your door for installation the cross bore should be 2-1/20cm in diameter and the edge bore should be 2.5cm in diameter. This product meets ANSI Grade-2 Specifications which means this knob is rated for commercial security. Entry Lock; operated by a key on the exterior and is by a turn-button knob on the interior.. Dimensions - 7.36 x 14cm x 7.5cm .. Item Weight - 1kg.