Dripless ETS5000 Industrial Grade Heavy Duty Caulking Gun

The Dripless ETS5000 Industrial Grade Heavy Duty caulking gun has a composite revolving frame that fits 29oz (1/4-gallon) cartridges and a 18:1 thrust ratio for use with all caulks and construction adhesives including polyurethanes, as well as concrete, masonry and roofing sealants.
The gun has both drip and non-drip settings: 
 
Turn the dripless option OFF when applying highly viscous products such as construction adhesives and polyurethanes. This will keep constant pressure on the cartridge for easier dispensing.
 
Turn the dripless option ON to apply products such as acrylic and silicone caulks to eliminate run-on and produce a smooth bead with a professional look.
 
The revolving frame allows the barrel to rotate for maintaining the same bead orientation when caulking around corners. The hook on the back allows it to hang on a ladder, and a seal puncture tool and a spout cutter are built into the side of the gun for opening cartridges without a knife.