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JKCKHA HSS New Orleans Mall Drill Bit Steel Cheap mail order sales Step Gr Straight 3-12mm 4-12mm 4-20mm

JKCKHA HSS Drill Bit Steel Step 3-12mm 4-12mm 4-20mm Straight Gr

$13

JKCKHA HSS Drill Bit Steel Step 3-12mm 4-12mm 4-20mm Straight Gr

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Product description

We provide perfect after-sales service, if you have any questions, please feel free to contact us.
Material: HSS (Suitable for use in the hardness below 25 degrees workpiece, such as carbon steel, the thickness of the plate of step is 5mm).
High speed, titanium nit-ride coated steel Replaces 28 separate drill bits Two fluted design for fast, smooth cutting.
When inject cold water while working, can effectively extend the service life of the drill bit. Recommend drilling rate of 250-250 RPM.
Purpose: Such as carbon steel plate, sheet iron, insulation boards, wood. Cannot be used for stainless steel.
MEASUREMENT:
3-12 10 Steps (Diameter 3,4,5,6,7,8,9,10,11,12mm)
4-12 5 Steps (Diameter 4, 6, 8, 10, 12mm)
4-20 9 Steps(Diameter 4, 6, 8, 10, 12, 14, 16, 18, 20mm)

JKCKHA HSS Drill Bit Steel Step 3-12mm 4-12mm 4-20mm Straight Gr

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