Feature:1. Smart Glue Apply: Ensuring fast exhaust without overflow, the air caulk gun can evenly apply the glass glue, and the speed is also adjustable.2. Wide Application: Widely applied to photovoltaics, solar panels, bathtubs, aquariums, building decorations, glass door and window and so on.3. Ergonomic Design: Equipped with pressure gauge, the pneumatic caulk gun with ergonomic design is very comfortable to hold, and easy to operate.4. Made of Good ABS: Premium ABS material is adopted, which has been through excellent workmanship, not likely to malfunction and very durable.5. Simpler Carrying: Designed to have a compact size and a light weight as well, the pneumatic caulking gun is very convenient to carry with you.Specification:Item Type: Air Caulk GunMaterial: ABSGlue Type: Hard GlueGlue Cartridge Capacity: 310mlAdjustable Size: Approx. 19 ~ 23mm / 0.75 ~ 0.91inApplicable Glue Cartridge: Approx. 21.5 ~ 22.5cm / 8.46 ~ 8.86in.Package List:1 x Air Caulk Gun1 x Pressure Gauge10 x Air Caulk Gun Nozzle2 x Extension Hose4 x Air Caulk Gun Elbow Nozzle4 x Glue Scraper