No Center Punch Needed: Century Quick-Cut Points Are Self Centering And Penetrate Faster With Less Pressure, Will Not Walk Or Wander At The Starting Surface.
. Cobalt Drills Are Designed To Cut Through Extremely Hard Metals, Including Stainless Steel. Cobalt Drill Bit 3/16" Overall Length 3-1/2" 12X Life Rating, Comparison To The Average 118 Degree Point High Speed Steel Drill. Drill Bits Cobalt.