These kits feature specifically designed tips for heat shrink tubing in the telecommunications field. You'll achieve a soft, wraparound flame that spreads the heat quickly and evenly without overheating. The air and fuel gas mix produces a bright yellow, highly visible flame. Use with either Propane or MAP//Proâ„¢ (Propylene) gas without having to change the orifice. Features * 6 ft. hose with SHLP Hose Spring. Disposable cylinder is not included in kits and is sold separately.