This product is a set of three drill bit countersink inserts replacement for DEWALT industrial countersink sink insert. The inserts are made of steel and have a black color. They are suitable for drill applications and have a diameter of #6-#8-10. The length of the inserts is 2-1/2". The package includes one set of three inserts. The model numbers are DW2075, DW2076, and DW2077. The product is made in the United States.