• 3Pcs/Set 3-12Mm 4-12Mm 4-20Mm Hss Straight Groove Step Drill Bit Coated Wood Metal Hole Cutter Core Drilling Tools Set


    USD $2.77 - 8.35VAT Included$5.54 - 16.7050% OFFFree Shipping
    $1.94 Just for Dropshipping and Wholesale

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    Unit Price $2.49 $2.35 $2.22 $1.94



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    • Estimated Delivery 5 to 9 Business Days.

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    DIY Supplies: Woodworking
    Type: Center Drill Bit
    Use: Wood Drilling
    Model Number: 182210864
    Certification: NONE
    Material: High Carbon Steel
    type1: Drill bit
    type2: Drill bits for wood
    type3: Mini drill
    type4: Conical drill
    type5: Woodworking
    type6: Straight flute step drill
    type7: Mini
    type8: Conical
    type9: Drill holder
    type10: Wood Drilling
    type11: tools
    type12: woodworking tools
    type13: Bit for electric screwdriver
    type14: Metal drills
    type15: Construction tools
    type16: Wood cutters
    type17: Hammer drill
    type18: Step drill bit
    type19: Drill bits for wood
    type20: Woodworking tools



    Features:

    Brand New and High Quality

    Made from high quality HSS steel

    Ideal for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc.

    Titanium coated to reduce mit and heat

    Heat treated and highly polished. Drills perfectly round holes in steel, brass, plastic, wood etc.

    3 sided shanks design in order to prevent slippage when in chuck

    Two flute design drives faster, smoother and cleaner cuts each step is clearly labeled with the depth diameter in steps

    Function: Deburring, Chamfering, Cutting or expanding holes

    Supporting tools: Pistol drill, Hand drill, Charging drill, Bench drill. (Water injection cooling while working, it can effectively extend the service life of the drill bit, especially in the case of continuous drilling)

    Package include:
    Type1: 3-12 4-12 4-20 bag
    1 x Drill Bit 3-12mm

    1 x Drill Bit 4-12mm
    1 x Drill Bit 4-20mm
    1 x BagBag color black blue random

    Type2:3-12 4-12 4-20
    1 x Drill Bit 3-12mm

    1 x Drill Bit 4-12mm
    1 x Drill Bit 4-20mm

    Type3:4-12
    1 x Drill Bit 4-12mm


    Type4:4-20
    1 x Drill Bit 4-20mm

    Attention:Because of the outer diameter of each step of the step drill is gradually expanded,then the corresponding cutting resistance and linear velocity will also be gradually increased.

    Owing to the step drill is completely dependent on the inclined edge that is only with 1mm length,If the feed speed is too fast when drilling,it will be easily to be annealing caused by abrasion of the oblique edge.

    Please give a downward force when drilling, do not press down too hard to avoid the edge wearing.

    Suitable material: Workpieces with general hardness, such as wood, plastic, PVC plate, iron plate, plate thickness within 3MM. Please note that stainless steel and spring steel are not applicable. Not for quenching. (Water injection cooling while working, it can effectively extend the service life of the drill bit, especially in the case of continuous drilling)