Newborn 101 1/10GL Superior E-Z Thrust Smooth Rod Caulking Gun Type - 1/10 gallon superior E-Z thrust blue caulker Smooth rod caulking gun for use with 10 oz. Cartridges E-z thrust mechanism Thumb activated pressure release Built in spout cutter No mess, no waste 1/10 gallon, 11 fl. oz, caulking gun with superior thrusting power Thumb activated pressure release stops caulking flow instantly No more old fashioned, hand tiring ratchet gun Smooth rod gun