I purchased these but they are unused. There may be some scratches from storage. GM 25kN 1215 I would like to sell both together. The following is quoted from the website: GM CLIMBING's rappel rings are made of aluminum and the surface is smooth due to anodizing, allowing for smooth work without damaging ropes or slings. Seamless construction ◆◆◆ Rappel rings manufactured with seamless forging technology increase strength, and there is no need to worry about the ring opening in the middle. Aluminum is strong and light, protects against rust damage, and is lightweight and durable. Friction knots and rope connectors ◆◆◆ Can be set up with ropes and prusiks to create friction knots. Furthermore, by using two rings (one large and one small), the resulting friction saver has a simple design and can be made by splicing. Especially in cases like tree climbing, when a worker on a tree needs to be rescued, you can fix a friction hitch to the harness, make a stopper, then untie the daisy chain and lower the worker. All-around ◆◆◆ Can be changed from all directions, can rotate 360 degrees, and the strength to withstand force in any direction is the same, so there is no need to worry about improper loading direction. Versatility ◆◆◆ Rappel rings can be used in various fields, and are widely used in all areas of outdoor activities, rock climbing and rappelling, rescue, arborists, camping and hiking, connecting tents and ropes, slacklining, aerial dance, and fire and rescue operations. Rappel ring