Fail Locked. An easy to install Locinox surface mounted electric gate strike which is easily interchangeable with SA keeps. This version is fail locked and offers up to 300kg resistance to pressure on the latch bolt. It can be easily changed to suit left or right handed gates and is adjustable to suit gate profiles of 40mm to 60mm depth. . Fast and easy fixing with Quick-Fix. Interchangeable with Locinox SA keeps. Reversible handing. Adjustable for gate profiles 40mm - 60mm depth