The Extended Reach Knock Down is made of the same stuff as Druz black knock downs. This is a Knock Down not a hammer. It is threaded so it can be attached like my blending hammer head. It will accept 5/16-18 tips DZ, DC, etc, but the threads in the knock down are plastic threads. You don’t need to have a tip on it to use it. Once it is your tool, you can do what you want with it, but it is sold as a knock down. There is no warranty on the threads or the shaft. The handle is 15″ long 38cm. It is sold WITHOUT TIPS.