Haydn Revolving Heavy Duty Caulking GunThe Haydn 266mm Revolving Head Caulking Gun with Hook boasts many outstanding features such as: Heavy Duty 230mm 9 & 265mm 10. 5, 266ml 375ml 12. 68 fl oz, Thrust Ratio 11: 1, Handy ladder hook, Steel body & zinc alloy handle with comfort grip trigger for strength, Heavy duty smooth rod with hook end for hanging, Metallurgy driving dog for better, caulk performance, Round skeleton frame for quick, cartridge loading & removal, Revolving barrel allows