Uniweld’s RP3T5 Hand Torch is designed for working in tight areas where access is limited. Portable and lightweight, this flame tool can be operated with Propane or MAP//Pro™ [Propylene]. The included Twister® Tip utilizes swirl combustion technology to produce a high energy efficient flame. If using propane; the RP3T5 allows soldering up to 3 inches, and brazing up to 1 inch of tubing. If using propylene; The RP3T5 allows soldering up to 3.5 inches, and brazing up to 1.75 inches of tubing.