Caulk Gun Conversion Kit, Caulk Gun Accessory, Black, Size 20.3 In. x 3 In. x 3.15 In., For Use With 14P349 Quart (29 oz) carriage accepts all standard Quart (29 oz) caulking tubes and cartridges, Includes Conversion Kit Includes The Quart Length Plunger Rod And Piston Assembly.