HybridTech Series, 9" Ratchet Rod Multi-Purpose Caulk Gun For Use With 10OZ Cartridges, Steel Frame Prevents Loss Of Energy While Composite Blue-With-Green Handle Improves Weight & Comfort, Frame Will Not Flex & Bend, Dual Component Comfort Grip, Spout Cutter & Seal Puncture Tool For Added Convenience, Thrust Ratio 6:1.