Features: brand new and high quality The for latch is made of 304 stainless steel with strong bearing capacity and wear resistance. The lock bolt door adopts hexagonal design, which is not easy to slip when opened. The screw thread of the lock catch is precise and uniform, and it is not easy to get stuck in the groove when in use. Triangular shape design makes it easier to connect, better bearing pressure, more safe and reliable. It is widely used as a protective assistant in uphill, mountaineering, cave exploration and other sports. Specifications: Material:Stainless Steel Type:10mm/6mm/8mm(Optional) Size:as the Picture Show Note: Please allow 0-1cm errors due to manual measurement, make sure that you do not mind before you order. Package includes: 1 x for Triangle Connecting Ring