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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Diameter	Choose an option#1 (0.228) WIRE GAUGE#2 (0.221) WIRE GAUGE#3 (0.213) WIRE GAUGE#4 (0.209) WIRE GAUGE#6 (0.204) WIRE GAUGE#7 (0.2055) WIRE GAUGE#9 (0.196) WIRE GAUGE1/16''5/64''3/32''7/64''1/8''9/64''5/32''11/64''3/16''13/64''7/32''15/64''1/49/32''19/64''5/1621/64''11/32''23/64''3/87/16''1/2''
Quantity	Choose an option(6)12
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