Lockback Knife on a Key Chain by Bartech Pro This accessible dwarfish mini knife on a kg chain an supererogatory sharp-worded 1-7/8 inches 420 medical procedure unsullied steel half-serrated blade to cut cord or twine easier and gladiator Leymar handle. The thumb stud one-handed opening with either the remaining or correct hand. Measures 4-1/4 inches long-life and 2-1/2 inches closed. Lifetime. Bulk.