SKU: N/A
Categories: High Speed Steel 135 DEG, Metal Drill Bit
High Speed Steel Twist Drill Bits Black Oxide Jobbers 135DEG
Description
The most economical coating. Black oxide adds corrosion protection, increases tempering and stress relieving of the bit, reduces galling and chip welding, and aids in retaining drilling lubricants. Black oxide is suitable for drilling iron and steel but is not recommended for drilling aluminum, magnesium, or similar materials.
Additional information
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Dimensions | N/A |