Euthanizing your catch is one step in the Ike Jime process, and the Aftco Ike Jime Fish Spike does just that. Preventing your catch from suffocating is not only humane, but also works to prevent the brain from sending signals to the rest of the body, sending cortisol and adrenaline throughout its body. These hormones are known to affect the fish and the quality of its meat. Made from 316 stainless steel, this spike can be used on gamefish of all sizes and is corrosion and rust resistant. 8 Inch Total Length with 4 Inch Spike Marine Grade 316 Stainless Steel Slim, Low-Profile Design Integrated Lanyard Hole.