Our precision ground 4.000" diameter solid carbide saws are best used for tougher materials like steel, stainless, and super alloys. They have 72 teeth with a 5 degree rake angle, and a 1.000" inside diameter. The saws are ground with ultra-precision tolerances, with thickness held to +.0002"/-0.0000". Typical depth of cut per pass is about 2 times the saw thickness. If the total depth of cut is more than 5 times the saw thickness, or you need to have a slitting saw with the highest performance, try the K40-32-72 series saw. The recommended maximum total depth of cut with a C40-32-72 using an AB-1000 saw arbor is 1.200". For more gripping force and a maximum depth of 1.210" (using a .050" clearance cushion), use an NAB-1000 saw arbor.