drill bits & sets
mountain 55620 5 16 cobalt drill bit
p strong features and benefits strong p ul li made from premium grade cobalt steel li li 135 split point starts cutting at the starting surface li li for use in extremely hard metals including stainless steel li li no center punch needed li li aerospace nas907 j specifications li ul p 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 in the usa . p
mountain