This undercoating is made of aluminum as a whole. The body adopts artificial engineering design. It is very comfortable to use, and you not feel tired even after long time use. The paint sprayed from the has a fine atomization effect, and you can get the best effect by turning the control knob. This is equipped with 4 pcs 19.69" long extension . The extension is flexible and can be easily bent and penetrate into narrow working areas such as the bottom of the car, the inside of the hollow frame. It can help you easily achieve spraying without dead angles and comprehensive coverage. This undercoating is very easy to use, even for a novice, just read the operation manual to quickly complete the assembly and . The equipped air pressure gauge can check the air pressure at any time. The oil-water separator can help you separate impurities. This can be used for oil-based, solvent-based, water-based and viscosity paints. It is very suitable for spraying automotive anti-rust coating, rubberized undercoating, anti-chip coating, truck bed liner and other general-purpose coatings. Whether you are a professional in the automotive industry or a DIY enthusiast You receive 1 pcs undercoating (with 20oz Suction Feed Cup), 4 pcs 19.69" long flexible extension , 1 pcs oil-water separator, 1 pcs pressure gauge, 1 pcs quick connector, 1 pcs brush and 1 pcs instruction manual. You can have all the accessories needed for spraying by one purchase. enjoy your spraying time! Color: As Shown Material: Metal Package Contents: 1*set undercoating Only the above package content, other products are not included. Note: Light reflection 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.