Features: 1.Air hopper sprayer is a Real stone coating spray tool, the head and barrel are segmented design, the head material is made of pure copper fittings, durable, the needle is all-steel fittings, and never rust, the body is ABS material. 2.Air hopper sprayer replacing traditional caulking construction technique, by hand using the unique principle. 3.Air hopper sprayer has a manual button for body design, convenient and quick. It is a Manual control of gas volume, easy to handle, easy to receive the spray tool, and makes it easy to enlarged feed opening. 4.Air Hopper Sprayer is a Multi-angle all-round, thin crack that can be easy to fill. Immediately after use clean water. Before use and after use can be to paddle with a little cooking oil lubrication, so use into which can reduce friction that can help you protect the tools to make the spray tool shelf life more last long. 5.This sprayer is a stone paint spraying tool that use to spray or as a coating tool. The Main uses for Air Hopper Sprayer can be used for real stone paint, putty powder, stone paint, marble paint, cement slurry, diatom mud, rock chip paint, relief, stone paint, metal paint, texture paint, colorful paint, fireproof paint, exterior paint, texture paint, and many more. Specification: Material:ABS Operating pressure: 0.4-0.8mpa Package List: 1 X Air Hopper Sprayer