The triple action Locksafe gate locking mechanism has long been a firm favorite in the arborist world and the Ultra D is a handy new addition to the range, especially with such high gate strength. Offset D shape maximizes the gate clearance Gate Opening: 5/8 in. (16 mm). Also recommended as a connector in conjunction with retractors and lanyards as well as many other Working at Height applications. Conforms to EN362:2004/B, CAN/CSA Z259.12 (2011) and ANSI Z359.12 (2009) . Tensile Strength: 6,744 lbs. (30 kN) Working Load Limit: 674 lbs. (3 kN) Conforms to EN362:2004/B, CAN/CSA Z259.12 (2011) and ANSI Z359.12 (2009)