XINDA XD-8128 11.3x7.3cm Carabiner Clip D-Shape Rock Climbing Hanging Hook - Blackish Green •Made of quality aluminum alloy,hard,anti-rust and durable for long-term use •The lock door is designed with an anti-hook system to prevent hooks from being caught •The non-slip textured nut makes the lock's door more tightly locked during use,not easy to slip,and more secure and reliable •The D shape makes it easy to connect,and the connected seat belt and protective tool can always be fixed in a good long axis stress position,which can withstand up to 3000kg of tensile force •Safe and suitable to hang heavy stuff such as hammock,hammock chair,rock climbing rope,aerial yoga,punching bags,etc Specification: •Pulling force: lengthways pulling force: 30kN (about 3000kg); horizontal axis pulling force: 9kN (about 900kg) •Material: 7075 high strength aluminum alloy •Dimensions: width 7.3cm,height 11.3cm •Opening: 2.3cm •Application scope: mountaineering,climbing,aerial work,cave exploration,rapid descent,outdoor activities and rescue Package included: •1 x Carabiner •Other things not included