3Pcs/set 3-12mm 4-12mm 4-20mm HSS Straight Groove Step Drill Bit Titanium Coated Wood Metal Hole Cutter Core Drilling Tools Set

$ 17.572,88

SKU: 4001260898453 Category:

Description

  • Type: Drills
  • Application: Wood Working Tool
  • Package: BAG
  • Origin: Mainland China
  • Model Number: 3-12mm 4-12mm 4-20mm
  • Size: NONE
  • Brand Name: Fbiannely
  • is_customized: YES
  • DIY Supplies: Woodworking

Features:

100% 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)
Rotating speed:
3-12 speed:260-400
4-12 speed:260-400
4-20 Speed:180-240

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)

Length: 

3-12mm Length: Approx. 7.9cm/ 3.11″
4-12mm Length: Approx. 6.7cm/ 2.64″
4-20mm Length: Approx. 7.4cm/ 2.91″

The  Cutters Come in the Following Sizes:
3-12mm(3mm,4mm,5mm,6mm,7mm,8mm,9mm,10mm,11mm,12mm) 10 Steps
4-12mm: (4mm, 6mm, 8mm, 10mm, 12mm) 5 Steps
4-20mm:( 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm)9 Steps

Package included:

1 x Drill Bit  3-12mm
1 x Drill Bit  4-12mm
1 x Drill Bit  4-20mm
1x Bag(Option Option and Blue or Black Random Delivery)

Note:

1. Please make sure the address is correct and we are not responsible for wrong or undeliverable addresses.
2. We fully understand it would be frustrated when the shipment takes longer than expected. As we promised, we will ship out the items within 7 day once payment clears, however, the shipping is controlled by the shipping company and we are just as anxious as you are. Low rating on shipping time would be unfair to us. Your understanding is highly appreciated. We hope our customers be happy when they received our items, so please only buy when the shipping time is acceptable for you.
3.Free shipping by ePacket to USA.
4. Our default shipping method is China Post air mail with tracking.
 
Payment:
1. We accept Alipay only.
2. Simply click the “Pay Now” button at the top of your ended auction to submit a secure payment through checkout.
3. Final purchase price do not cover any applicable tax or duty that might be charged by customs .Buyers are responsible for such charges
4. If you have any problem on payment,please inform us.
 
Return back and Feedback:
1.For any personal reasons (choose a wrong size / wrong color / doesn’t fit ), you can simply email us to get the return mailing address and return the item(s) in its original condition. Return shipping charges will be the buyer’s responsibility. We will not accept any items with odors (perfume, smoke, etc.)
2. If items are damaged, we must be contacted within 24 hours of receipt.
3. For other quality issues, we will refund immediately once we receive the photo of the item.
4. Item must be returned within 14 days after buyer received it.
5. Our Goal is to offer 5-Star Service if you do not feel that we deserve 5-Stars please contact us before leaving feedback.
6. Have questions on comments? We would be happy to hear from you! We are dedicated to our customers and feel you should receive the personal attention you deserve. We typically reply to e-mail within 24 hours during normal business hours.

 

 

Additional information

Color

1pc 4-20mm LX, 1pc 4-22mm, 3pcs 4-12 3-12 4-20, Bagged4-12 3-12 4-20, Nitriding Black 3PC, Nitriding Black 3PC-201456596, Nitriding Black 3PC-201456597

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