Maxam Falcon IV Lockback Knife on a Key Chain. This handy knife on a key chain features an extra sharp 1 7 8" 420 surgical stainless steel half serrated blade to cut cord or twine easier and lightweight Leymar handle. The thumbhole allows one handed opening with either the left or right hand. Measures 4 1 2" long opened and 2 1 2" closed. Lifetime warranty. Gift boxed 1 lb.