Cressi Spearfishing Accessories, Shock Cord for Spearguns - Cressi: Italian Quality Since 1946 Cressi is a REAL diving, snorkeling, and spearfishing Italian brand, since 1946. The Cressi Shock Cord is a must have for spear fisherman. This invaluable cord can save you the frustration of losing your catch, your shaft, or breaking your line. The Cressi Shock Cord is made using an Elastic Bungee with a Dyneema cord for ensure resistance and long lasting use. The Bungee Shock Cord feature a High Strength Pigtail Swivel. The Pigtail allow you to unload the monoline to either change spear or to thread a fish off the line. The Bungee is a Latex Hollow Tubing that can elongates Up-to-Three times its original length.