Features 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 Gun Material: ABS Glue Type: Hard Glue Glue Cartridge Capacity: 310ml Adjustable Size: Approx. 19 ~ 23mm / 0.75 ~ 0.91in Applicable Glue Cartridge: Approx. 21.5 ~ 22.5cm / 8.46 ~ 8.86in Package List 1 x Air Caulk Gun 1 x Pressure Gauge 10 x Air Caulk Gun Nozzle 2 x Extension Hose 4 x Air Caulk Gun Elbow Nozzle 4 x Glue Scraper