Review on 🔋 POWERTEC QDB2013 16 Inch Cobalt 135° Superior Drill Bit by Hector Liamsi

These drill bits are the best I've ever used. I bought a 12 pack for a stainless steel project and expected four to six bits to be used for this project. I ended up using one tip for the same amount of material I would normally use for six to eight titanium coated tips, costing me three times as much.