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Li>Quality Material: High Speed Steel.Deburring Function: Automatically Deburr Holes When You Drill.Surface Treatment: Nitrogen Treated To Increase Hardness And Abrasion Resistance.Scope Of Application: Thin Iron Plate Aluminum Insulation Boards 4Mm Thick Pvc Boards In Wood.Step Type: 14 Sizes 4-42Mm (4 6 9 12 15 18 21 24 27 30 33 36 39 42Mm)Main Features:Treated By Nitrogen To Increase Hardness And Abrasion Resistance.Automatically Deburr Holes When You Drill.Made Of High Speed Steel Durable And Long Lasting.14 Sizes 4-42Mm (4 6 9 12 15 18 21 24 27 30 33 36 39 42Mm)Widely Used For Cutting Holes In A Variety Of Materials Like Steel Wood Thin Iron Aluminum Alloy Insulation Board Pvc Sheet Ect.Package Contents:1 X 4-42Mm Hss Steel Cone Drill Bit.
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