Description of Vermont American 13307 2 Inch 4 Inch
Provides smooth, accurate drilling in ceramic tile, mirrors, glass, marble & china. For use with drills that have 3/8 In or larger chuck. Spear pointed tip reduces breakage.
These Industrial and Scientific Cutting Tools promised the efficiency my company needed but failed to deliver .Thanks to my knowledge gained in practice, i can confidently say these bits are poorly made. The holes were not precise leading to wasted materials and time. The only pro is that they were easy to order. The cons outweigh this momentary convenience, making these bits not worth the investment..