The gun comes with a nozzle and the needle are made up of stainless steel to continue using diesel & oil ?????? The unique thing about this gun is that its low air pressure saves oil & diesel and protects nature ?????? Following are its parts with sizes. Standard Nozzle: 1.2 mm, Air Inlet: 1/4". Cup/Bucket Capacity: 700 ML, Operating Pressure: 30-50 psi ?????? THe high capacity car cleaning tool with 700ml large capacity cup, high pressure, good cleaning effect. ?????? This multifunctional washing gun has fine workmanship, beautiful appearance, rust and corrosion resistance. ?????? Mainly used for cleaning dirt, grease and oil from engines and machinery, also be used for blowing dust, painting and other suitable works. ??????The car washing tool has high efficiency, strong detergency, saving time and effort. ?????????????????? Exceptional design : - Lovely presents to you the most unique and exceptional design range of cleaning tools for specific products and places. ?????? It has a shape of a gun and is fabricated with casting metal. ?????? Application : - The air-compressed blowing gun is widely applicable. ?????? It is ideal to use the plastic molding industry, foundries, machine shops, duster, etc. It has low air pressure. ??????Specifications : - Fabricated with a sturdy design, it requires an air compressor for its usage. It has a standard nozzle of 1.4 mm, an air inlet of 1/4� and it operates at 40-60 psi. ??????