The Mares Hero Polygon Spearfishing Knife has a 70 mm long stainless steel blade and micro serration. The knife has an overall length of 175mm. The handle is ergonomic with an anti-loss system. Equipped with a hole for freeing rods stuck in rocks. Hero Polygon 2.1 spearfishing knife in 3mm stainless steel and 175 mm length. Compact and ideal for the most demanding spearfishermen.