Petzl Sarken Lever Lock Crampon Crampons for difficult routes in the high mountains: steep snow and ice slopes and couloirs, gullies, mixed climbing. Features: Front pointing: 2 front points, toothed and thin-section for optimal penetration on ice, fitted under flat points for good bearing power on snow and soft ice (gullies), next 2 points are notched and inclined forward for stability. Walking on 10 points: lateral points are separated to respect the asymmetry of the boot and to limit the "rail" effect which increases the risk of slipping, supplied with ANTISNOW to prevent snow build-up. Lightweight: less than 900 g. Adjustment is easy (no tools) and precise (to the half-size).