This part is made of a very tough American - Made steel, then heat treated and tempered to a very specific standard. Both are (Proprietary). Together the steel and tempering process produce a very hard yet very tough characteristic in the steel which allow it to do it's job well. This part is used to install 1-1/2" Galvanized Rigid Conduit pipe, after the initial hole is made through the ground with the Bullet Mole. It threads directly onto one end of the rigid conduit with a spanner wrench (included). The opposite end of the same pipe will have a Push Cap threaded onto it, also with the spanner wrench. Once the push point and Impact cap are connected to the Pipe then the whole assembly may be shoved into the hole (pointed end first), and also driven with a sledge hammer when the going gets tough or as it encounters obstructions.