BOUZ - Line cutter 

The BOUZ Line Cutter II is one of the most useful pieces of equipment you can have in your tackle box. A great tool for FG knots, PR knots and anytime you need to cut/burn line (braid, PE, mono, fluorocarbon) The Bouz Line Cutter II can cut any line as well as it eliminates any sharp ends, no-fray. Also allows you to burn the end of mono leader without damaging the leader. Features locking mechanism (almost waterproof), it is refillable and has an adjustable torch.  Note - this item is emptied of gas, please fill up with lighter type gas before using.