The Grivel 190mm Long regulation bar is designed to extend the range of their standard crampon bar. This longer bar will fit G10, G12, G14 and their Airtech crampons. Standard Grivel crampon bars will fit upto size 46 boots, but this is really the very limit of their range. We would recommend fitting these longer bars if the crampons are to be fitted to footwear of 45, or UK 10.5. This bar fits the Grivel G10, G12, G14 and the Air Tech crampons. Be aware that if you fit this bar to G10 it will reduce the flexibility of the crampon, and may require a stiffer B2 boot. The long bar can also be used with smaller sized footwear. By turning the bar over and swopping left and right to maintain the correct orientation a simple tag locks the bar in a shortened position.