GRIVEL Grivel Air Tech New Matic GV-RA073A02 Crampons Purchased new from an outdoor shop in Takadanobaba three years ago. Used once. There is some rust, but I think there are no problems with use. *Please check the images. *The following is a product description from a certain website. The Air Tech has a small, wide third point behind the second point so that 10 points are effective during normal walking and 12 points are effective during traversing. All the points are designed to be short, considering use on ice and rocky terrain. It is also lightweight and can be stored compactly. The front part is a plastic harness that can accommodate high-arched boots. The new spring plate "The Moretta" is attached to the rear part of the new Grivel crampons. Made of stainless steel, it can be easily lifted with your fingers, allowing for smooth size adjustment. [Semi-automatic crampons]: Crampons for boots with a heel welt. Weight: 470g (one side) Size: 35-46 (European size)