The LUDT from Microtech features lots of milling in the 6061 T6 OD green aluminum handle that makes for a very sweet looking knife. The UDT (Underwater Demolition Team) knife was introduced by Microtech founder Anthony Marfione over 20 years ago. This is the larger version or LUDT in his line of UDT automatic knives. The 3.4 inch blade is perfect for EDC use. All hardware is stainless steel including pocket clip.