Spike simplest Grivel ice. Simple to put through the asymmetric tip. Simple bolt through the crank handle. Simple to clip through the ring shape. Simple to carry on a carabiner, like many at once will find that Helix has all the qualities of the nails Grivel ice that has allowed them becoming the global standard. The huge technological capacity and large quantities of production, have enabled Grivel offer a high quality product at a really interesting price unmatched in the market in terms of money. Weight: gr. 145