[Keyed Entry Function]: Heavy duty keyed entry door handle sets can be locked and unlocked from the exterior with a key, and then locked or unlocked from the inside with an associated turn-button. While primarily used to secure entrances and side doors, it can be used anywhere a little extra security is desired. [Size]: Adjustable latch (the distane of hole center to the door edge) - 60mm or 70mm(2.4 or 2.75 inch); Fit for door thickness: 35mm to 45mm(1-3/8 to 1-3/4 inch). Rosette: 65 x 65mm, Door Handle Length: 123mm [Reversible]: Works with both left and right handed doors.Meet your different needs at a cost-effective price [Easy Installation]: Drill hole from both side of door:54mm. Drill hole straight into edge of door:25mm.One-person project! Come with all accessories and instructions.