The smartest 20 grams on your rack The Piranha is equally at home on your key chain as it is 1000&'; feet off the deck. The serrated blade is made from surgical quality 440-C stainless steel and even at a scant 20 g it&';s tough enough to handle years of use and abuse. With a size smaller than a carabiner - you won&';t even know it&';s there. Details Carabiner hole prevents unwanted opening Bottle opener for send beers Serrated 2-inch 440-C stainless steel locking blade