After repeatedly drilling through various metal types with all selected models, we recommend the DeWalt Industrial Cobalt Alloy Steel Set. This kit contains 14 bits ranging from 1/16 to ⅜ of an ...

Similarly, where a standard cobalt bit may be too brittle ... The secret to the Metal Demon™ Drill Bits for Mild, Hardened and Stainless Steel's superior performance is Diablo's commitment ...

I'm trying to figure out which type of bit is best for drilling thru about 1/4" of galvanized steel. I recently used a standard carbon-steel bit to drill ... Cobalt steel<BR><BR>Looking at 1/4 ...

Moly drill bits work well with mild steel. Cobalt bits are expensive and best choice for the abuse common in farm shops, but…drill bits by definition are “consumable items.” The differences ...

Diablo's Metal Demon™ Drill Bits for Mild, Hardened and Stainless ... deliver inconsistent performance, or cobalt bits that are limited to stainless steel or other very brittle material with ...