The Boker Magnum 01MB334 Classic Steel Pocket knife is both useful and handy pocket. The blades, cap lifter and can opener are made of 440C stainless steel, and the handle is handsome rosewood. The steel bolsters and ring can be used to attach a lanyard or knife chain. Blade length: 2 1⁄2 in. Overall length: 6 1⁄4 in. Weight: 2.9 oz. This Boker Magnum knife isn't just for cutting, it's for leaving a mark. Limited lifetime warranty. A chestnut tree is the world famous trademark of the Boker knife manufactory in Solingen, Germany. It represents innovative, high quality, exceptional knives, manufactured with pride, by hand, for over 145 years.