aluminum alloy materials, strong and Quick exhaust for to minimize the overflow of The rotatable tracheal joint makes the more for easy caulking Whether you are a professional or casual DIYer, this caulking-gun will meet your needs. Pneumatic are mainly used in homes, factories, construction or other adhesives that can produce a sealing effect. Simple labor saving, high efficiency; no overflow, no air leakage., Manufacturer: carotoe