The nozzle holder is an accessory that connects the nozzle. It is generally used to connect the threaded nozzle. One end of the nozzle is connected to the gun barrel, and the other end is connected to the nozzle. After the nozzle is connected, cleaning can be carried out. The connection between the nozzle holder and the nozzle is generally sealed with raw tape. Raw tape, namely polytetraethylene, has the characteristics of good toughness, high longitudinal strength, and easy lateral deformation. It is an ideal sealing material, and is corrosion-resistant and high-resistant. The nozzle is sealed with raw tape, mainly because it can be disassembled and easily replaced. The nozzle holder is generally made of carbon steel galvanized material with good strength, and the galvanized layer has corrosion resistance. Generally, the outside of the nozzle holder is covered with soft plastic to protect the nozzle from damage. The soft plastic has good cushioning properties and wraps the entire nozzle inside, which is not easily damaged by hard objects.