Eazypower - Isomax 3/8 in. X 3/8 inch D Tool Steel Countersink Countersink Bit 1 pc

IRWIN General Purpose High Speed Steel Bit is constructed of M-2 high speed steel for the best combination of strength, heat resistance, and wear resistance

3/32" Titanium Nitride HSS SAE Straight Shank Right Hand Drill Bits (2 Pieces) (63906) by IRWIN. Titanium nitride coating extends the life of the bit; lasts up to six times longer than standard high speed steel drill bits. Heavy-duty web design provides extreme rigidity when drilling in metal applications. Shorter cutting lips reduce torque when drilling in high tensile strength materials.

High performance metal drilling for portable drill users, works well on curved surfaces. Revolutionary tip design stays sharper longer and drills up to 10x faster than other leading drill bits. High speed steel features a black body and gold flute. Self-centering Turbomax tip for clean entry and fast starts; stays sharp longer. Three flatted shank on 3/16 inch and above for better chuck grip.