This range of air caulking, air washing, air sealant and air grease guns are designed to provide a level of control unattainable from manual guns. The trigger gives the exact amount of caulk, sealant, grease or adhesive required and distributes the material at a smooth, steady pace. Air-powered or pneumatic guns function by compressing air, which in turn drives the piston and dispenses the right amount of lubricant. These Air Caulking, Air Washing, Air Sealant and Air Grease guns are suitable for construction, automotive, marine and aerospace industries.