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Utoolmart 7.1mm Twist Drill High Speed Steel Bit HSS-4241 for Steel Aluminum Alloy 5 pcs
Product ID : 45034938
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45034938
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About Utoolmart 7.1mm Twist Drill High Speed Steel Bit
Description: Material : High Speed Steel 4241 Bit Diameter : 7.1mm /0.28 inch Main color: Silver HRC: 62-63 Package Content: 5pcs x Twist Drill Bit. How to Use Twist Drill Bits Ensure the left and right cutting edges of the drill are symmetrical when drilling. Observe the uniformity of the spark while drilling, adjust the pressure in time, and pay attention to the cooling of the bit.
