The Dripless SH200 Contractor Professional Open-Frame Hex-Rod caulking gun has a steel skeleton frame that fits 10 oz. cartridges and can be used with materials such as latex, vinyl, acrylic, siliconized acrylic, and silicone. The smooth pressure rod requires less force and is quieter than a ratchet-style pressure rod. There is a cut-away front cap that facilitates loading the cartridge into the gun. 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.