Newborn 125 Smooth Hex Rod Parallel Frame Caulking Gun, 1/4 Gallon Cartridge, 10:1 Thrust Ratio Product Description The Newborn 125 Smooth Hex Rod Parallel Frame caulking gun has a steel skeleton frame that fits 1/4-gal. cartridges and has a 10:1 thrust ratio for use with medium viscosity materials such as silicone. The smooth pressure rod requires less force and is quieter than a ratchet-style pressure rod. 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.Caulking guns, also called caulk or cartridge guns, dispense a controlled flow of products such as caulk, sealants, and adhesives from a tube or cartridge. A manual caulking gun consists of a frame which holds the tube, a trigger, and a rod which moves forward when the trigger is depressed, dispensing the product. Manual caulking guns have a thrust ratio; the higher the thrust ratio, the easier it is to dispense the caulk, sealant, or adhesive. Air-powered or pneumatic caulking guns also have a frame and a trigger, but are used with an air pressure regulator that pushes the product from the tube using air pressure instead of a rod. Newborn Brothers Company, Inc. manufactures sealant and adhesive dispensers and accessories. The company was founded in 1974 and is headquartered in Jessup, MD. From the Manufacturer Uniframe construction for greater durability. Thumb-activated pressure release stops caulking flow. Powerful piston design for trouble-free performance. With seal puncture tool, spout cutter and ladder hook. No more hand tiring ratcheting. No mess and no waste. Recommended for all grades of caulks, sealants and adhesives from heavy to light consistencies. 10:1 thrust ratio. E-Z load open front cap and cartridge retainer spring. Features Steel skeleton (also called parallel) frame caulking gun for 1/4-gal. cartridges Thrust ratio of 10:1 for use with medium viscosity materials Smooth pressure rod requires less force and is quieter than a ratchet-style pressure rod Hook on the back for hanging it on a ladder Seal puncture tool and spout cutter built into side for opening cartridges without a knife Larger size for 28oz tubes Spout Cutter Hex Rod E-Z Thrust Mechanism Thumb Release USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.