I use the SOG Seal Pup, Seal Pup elite and SOG trident. The Seal pup is made with a glass reinforced handle, the blade is AUS 8 steel, it is a full tang blade and each Seal Pup has several variations. You can get them serrated or non serrated, various colored blades, and with a ballistic nylon sheath or a kydex sheath. The SOG trident If I remember correctly the handle is zytel, the blade is AUS 8 and its locking mechanism is the arc lock witch supposedly is rated to several hundred pounds before failure.