Stone Tools ST-194 4-3/8-Inch Variable Pitch M-42 Bi-Metal Hole Saw

Description

Stone Tools Bi-Metal Hole Saws represents the newest hole saw technology. StoneTools uses M-42 tool steel as it's cutting edge, which creates a more aggressive cutting action while offering extra long life. M-42 tool steel has 8-Percent cobalt and 5-Percent tungsten to create tough wear-resistant teeth, especially for hard materials. The new hole saws, cut faster, create smooth cuts with less vibration.