1 step, unique structure, a bit can open various size aperture, a step drill bit in one box.
2, does not need to use a center punch, and compared to ordinary twist drill is not easy to break. The construction site, a variety of specifications for step drill.
3, deburring, chamfering, open elliptical hole expansion, twist drill can not complete the function it possible.
4, and compared to ordinary twist drill. Little shake, do not need to use the leading center punch can also open a beautiful out aperture.
5, the use of tools: pistol drill, drill.While working side water cooling can effectively prolong the service life of the drill, the recommended drilling rate 250--400.
Recommend new materials, new technology and new products to you! Products for export, use a lot of foreign countries, nearly two years before selling on taobao!
Name: step drill
Material: high speed steel 4241 (for use in the following parts, such as the hardness of 25 degrees iron, steel plate, PV board, insulation board)
Specification: 6-60mm (6, 10, 15, 20, 25, 30, 35,40,45,50,55,60mm) 13mm handle
We have in stock all the time
We send the package by " AliExpress Standard Shipping" , All packages have tracking number
All products have 1 year guarantee
Batteries not included, Except some product use lithium battery.
All product include retail pack. if not have the retail box , maybe the box is too hight , SO If you are reseller,please contact with us.
We are not responsible for any custom duty or import tax.
Shipping around the world. (Except for some countries and APO / FPO)
2. Process the order in time after payment verification.
We only ship to the confirmed order address. Your order address must match your shipping address.
4. The displayed image is not an actual item and is for reference only.
5. Service transit time provided by the carrier, excluding weekends and holidays. The traffic time may vary, especially during the holiday season.
6. If you do not receive the shipment within 30 days of payment, please contact us. We will track the goods and reply to you as soon as possible. Our goal is customer satisfaction!
7. Due to the stock status and time difference, we will choose to ship from our first available warehouse for quick delivery.
return or refund
1. You have 7 days to contact us and 30 days to return it from the date it was received. If this item is in your possession more than 7 days, it is considered used and WE WILL NOT ISSUE YOU A REFUND OR REPLACEMENT. There are NO EXCEPTIONS! Shipping cost is bear by both seller and buyer in half.
2. All returned items MUST BE in the original packaging and you MUST PROVIDE us with the shipping tracking number, specific reason for the return, and your po#.
3. We will refund YOUR FULL WINNING BID AMOUNT, upon receipt of the item in its original condition and packaging with all components and accessories included, AFTER BOTH Buyer and Seller cancel the transaction from aliexpress. OR, you may choose to have a replacement.
4. We will bear all the shipping cost if the product(s) is (are) not as advertised.
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