drill bits & sets
mountain mtn55618 . 28 inch cobalt drill bit
cobalt drill bits are designed to cut through extremely hard metals including stainless steel the quick cut points are self centering and penetrate faster with less pressure it will not walk or wander at the starting surface extremely heat resistant must be operated in power units that have a rpm speed of 1500 or higher for maximum efficiency made from premium grade cobalt steel 135 split point starts cutting at the starting surface for use in extremely hard metals including stainless steel no center punch needed aerospace nas907 j specifications size 9 32 sku isn15079
mountain