GM CLIMBING Ice Climbing Crampon Steel 12 Teeth Strap on Semirigid Technical SPRING CLEARANCE! GM CLIMBING Ice Climbing Crampon Steel 12 Teeth Strap on Semirigid Technical. This GM CLIMBING steel crampon of 12 points provides you a safe and enjoyable ice climbing experience. With Semi-rigid 12 crampons, the crampon is much easier to fit a great variety of boot shapes. With strap-binding style, most kinds of boots or shoes will fit in. Made of steel material, the crampon features durability and is highly qualified for technical, steep and ice terrain.