Newborn 188 Super Ratchet Rod Cradle Caulking Gun, 1/10 Gallon Cartridge, 6:1 Thrust Ratio Steel half-barrel (also called cradle) frame caulking gun for 1/10-gal. cartridges Thrust ratio of 6:1 for use with medium viscosity materials Ratchet-style pressure rod has teeth to hold the rod in place after each pull of the trigger for minimizing drips Welded plate in back for securing cartridge in place Hook on the back for hanging it on a ladder Seal puncture tool Spout cutter No pinch finger guard Extra deep ratchet teeth Accommodates 10 oz caulk tubes