ApplicationHigh-speed welding nozzles are mainly suitable for hot air guns with diaphragm pumps. Vinyl Heat Gun Replacement Nozzle. Fast welding nozzle for welding polypropylene, polyethylene, PVC and polycarbonate. High quality and durability This high-speed welding machine is made of titanium alloy and is durable. It can withstand high temperature and prevent leakage. Package Included 3 x High Speed Welding Nozzles, 1 x 5*5*7mm Triangle High Speed Welding Nozzle, 1 x 5 *5* Standard 7mm 5mm Round Welding Nozzle and 1 Glue Nozzle. NoteLight shooting and different monitors may cause the color of objects in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-2cm. Specification: Material: Titanium Alloy Color: Silver Approximate weight. 121g/4.3oz Package List: 1 x 5 x 5 x 7mm Triangular Speed Welding Nozzle 1 *Standard 5mm Round Welding Nozzle 1 * Tacking Nozzle