Microtech L.U.D.T. 135-1 BR Push Button Side Opening Automatic Knife Brass Standard Black Blade Marked with the Microtech logo S/N 02345 L-UNDERWATER DEMOLITION TEAM 02/2016 M390. This Microtech LUDT is overall open length 8 inches with a blade length of 3.375 and has a blade thickness of 0.13 inches. It comes with a drop point flat grind black M390 Stainless Steel black finished blade. The handle is a stonewash finished Brass that is 4.625 inches and is 0.48 inches thick. This beauty weighs in at 7.6 ounces. It is made for the right hand user and comes with a tip up pocket clip and has a Plunge Lock.