Great tool - Midwest Industries 5.56/.223 Rifles 1/2X28 TPI 3.375 Inch Aluminium Blast Can, Includes Crush Washer

The build quality of this item is great. I like that it has the grooves on the outside that makes it easier grasp and tighten down. You can also use a wrench to tighten as well. What I really like is that the inside of the tube is tapered rather than just a straight open tube. The slots in the very front I think could be for using a straight edge item to tighten or loosen as well, such as the back side of a knife.