Quality HSS M2 ensures sharp and fast execution in any material for clean results. Premium Heat treated black oxide is durable and withstand heavy duty operation for a long tool life. Black Oxide Surface Treatment holds up lubricant better for smoother drilling. 6" OAL & 1/2" Str. shank fits 1/2" drill chuck; Milled & polished flutes ensure chips move smoothly. Precision ground with geometry of 118 degree chisel for quick penetration and an accurate start.
You don't often get more or better than you expect. Drilled a few holes for 3/4" FNPT threads and haven't even removed the black oxide finish yet. It comes in a reusable plastic case so it won't roll off while drilling.
I bought a 45/64 drill to drill 3 holes in 4140 0.3" carbide, no chips, no visible wear except for removing the oxide layer. I have this for the price of This bit is only used once and I have to resharpen/hone between holes but this bit was exceptionally well formed This is one of those rare occasions when you get so much more than you pay for I will buy it all from now on they have their disposable dentures!