EEZYCUT Trilobite Wrist Knife The forefront of Emergency Cutting Tool (E.C.T.) dynamics and design, the EEZYCUT TRILOBITE was developed for divers, mariners, mountaineers, extreme sports adventurers and rescue service providers who demand a tool that delivers a swift, safe, efficient cut. WEIGHT 0.125 oz DIMENSIONS 6.5 x 4.5 x 1 in Comes with 2 spare blades​​​​