Climbing clasp is a special carabiner with a spring attached to the metal ring to quickly and reversibly connect parts, especially in critical safety systems.
Mountaineering buckles are widely used in rope intensive sports such as mountaineering, tree planting, caving, navigation, hot air ballooning, rope rescue, construction, industrial rope, window cleaning, emergency rescue, and acrobatics. Their main materials are steel and aluminum. The weights used for sports are usually lighter than those used for commercial purposes and cable rescues. Mountaineering button rings are also a common style, such as mountaineering button or miniature storage boxes, and other lightweight kits of similar style and design. Because of the lack of load testing and safety standards in the manufacturing process, most products are labeled with warning signs such as "Do not climb". Although etymologically all metal fixtures attached to swing doors are climbing buckles, strictly speaking, specialized climbing tools in climbing groups are used only for the production and testing of safety-critical systems such as climbing and climbing, generally above 20 kN. An envelope is attached to a basket with a hot air balloon latch, which has a capacity of 2.5 tons, 3 tons, or 4 tons. The load-bearing spiral gate safety latch is used to connect the diver's umbilical cord to the dive belt on the surface. Its rated safe working load is generally above 5 kN (that is, above 500 kg).