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Ships within 48 hours · Estimated delivery Oct 8 - Oct 13
inner diameter
low noise operation
tear the gold tape
Bits Size: U4 U5 U6 U7 U8
Model: 51306
3pcs 13mm Nitride Titanium Coated High Speed Steel (HSS) 4341 Twist Drill Bits 3/8"x1-1/8"x3/8" inner diameter4341 high speed steel contains high content of carbon and alloy elements, providing excellent cutting performance, high heat resistance, high hardness, wear resistance and durability. Suitable for applications requiring precise and efficient processing. Black nitride and gold titanium dual coatings can apply lubricant better for smoother drilling and are more durable and corrosion resistant. Large spiral grooves facilitate the export of metal chips,
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