[LONG SERVICE TIME]- Made of pure copper material, have been tested for hundreds of times in durability, still work like new, copper nozzles could last even than aluminium nozzles. [LEAKPROOF DESIGN]- All copper nozzles have a built-in leakproof steel ball, no matter in pre-heating process, in use or after use, there will be no glue leakage from the nozzle. [PROTECTING SLEEVE]- Send with protecting sleeve to protect your fingers from the high temperature hurt. Material:copper colour:Golden Package Contents: 5 * nozzle (2.0 * 70mm, 1 * 40mm, 6 * 45mm, 3 * 50mm, 2 * 32mm) 3 * washer 1 * Small wrench 2 * Muzzle cover Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.