【Secure Screw Lock】The textured safety nut prevents the carabiner from accidentally slipping while adding strength to the gate. The internal springs allow for automatic one-handed closing of the gate. With this improved locking spring, the locking latch will not loosen and allow anything to slip.【Lightweight and Sturdy】Made of lightweight and durable aviation aluminum alloy. Durable, strong, practical, not easy to loosen, not easy to break, fine workmanship and no fading.【Compact Structure】The size of each carabiner is 11.5 x 7.5 x 1.1 cm; Weight: 93 grams; It is so light that it can almost fit entirely in your hand. Its compact design makes it practical and easy to carry.【Widely Used】Carabiners are very suitable for daily life. It can be clipped to a backpack or purse to hang keys, flashlights, ropes, hoses, water bottles and other items.