The Dripless CR400 Contractor Grade Cradle Ratchet Drive caulking gun has a steel half-barrel frame that fits 1-quart cartridges (cartridges not included) and can be used with materials such as latex, vinyl, acrylic, siliconized acrylic, and silicone. The ratchet-style pressure rod has teeth that hold the rod in place after each pull of the trigger. For thinner materials, this helps minimize drips. 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.