Caulking Gun, Smooth Rod, 3:1 Thrust Ratio

9", Blue, Smooth Rod Caulk Gun, Use 10 OZ Cartridges To Apply Caulk, Adhesives & Lubricants, Steel Frame, Smooth Center Rod, Round Compression Rod, Quick Release Thumb Lever, Built In Spout Cutter & Seal Puncture Tool, Thrust Ratio 6:1.