Leister Triac AT Hot Air Tool w/ 40 mm (1-1/2") Nozzle has intelligent digital temperature control read-out and blower speed control for TPO / PVC single-ply welding, vinyl welding, overlap welding, draw welding and stitching. The Leister Triac AT hot air tool is the best when accurate temperatures are needed. Leister AT reaches temperatures automatically and voltage fluctuations are compensated. THE Leister AT hot air tool has adjustable heat from 104 to 1148 degrees and air-flow control with a large digital display. See our Leister Nozzles.