The Dripless ETS1400 Ratchet Rod DIY Compact Grip Caulk Gun is professionally built with a 10:1 thrust ratio. With the Dripless feature, the rod retracts after each release of the trigger to back off pressure from the tube and help prevent dripping. The frame rotates to maintain the bead orientation when caulking around corners. Don’t get down—the hook on the back allows it to hang on a ladder while a seal puncture tool is built into the gun handle for piercing cartridge seals. The composite construction doesn’t absorb cold or heat so you can use it outdoors. Dripless is a registered trademark. Dripless, Inc. manufactures caulking guns and caulking and painting accessories. The company, founded in 1992, is headquartered in Sonoma County, CA.