amoolo 5/16" Cobalt Drill Bit, 10pcs

10Pcs 5 16 Cobalt Drill Bits 10Pcs 5 16 Dia 8mm x 3 Flute Length 76.2mm Metal Drill Bits. This drill bit fits the majority of power drill currently on the market. M35 Cobalt High Speed Steel Industry grade M35 high speed steel drill bit set, much harder than HSS used in other similar drill bits set. These drill bits contain 5 Cobalt, which increases wear resistance and durability. Fully Ground Process 135 Split Point Fully ground spiral groove design clears particles quickly, decreases friction and heat for a faster and cooler drilling performance. 135 split point with straight shank prevents walking and makes drilling precise and faster. No center punch is needed. Multiple Application Perfectly suitable for cutting through Hard Metal such as Stainless Steel, Steel, Sheet Metal and Cast Iron as well as Plastic, Aluminum Alloy, Wood and Other Softer Metals. Pay attention to speed, pressure and heat control during drilling. 90 DAYS If you are not fully satisfied for any reason, please for 100 or replacement