1/10 Gallon Superior E-Z Thrust Red Caulker, Hex Smooth Rod Caulking Gun For Use With 10 OZ Cartridges, Drip Free Spring Clip Drive, Features E-Z Thrust Mechanism, Built In Spout Cutter, Seal Puncture Tool & Ladder Hook, All Steel Welded Construction, Ideal For Professionals & Do-It-Yourselfers, Equipped With Caulk Buddy Finishing Tool To Create Perfect Bead, Thrust Ratio 10:1.