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CraftsmanCapitol™ Premium HSS Combination Countersinks Center Lathe/Drills Bit Set

  • Saving time and no more hassle with your project
  • All orders ship out within 12-24 hours
  • 100% Money-Back Guarantee


  • Durable and Resistance: Center drill bit is made of HSS high-speed steel, with an extremely sharp blade, low consumption and durable with impact resistance, wear resistance.
  • 6 Difference Sizes: Drill tip diameter size of center drill bits including 0.20” 0.12” 0.10” 0.08” 0.06” 0.04”. 60° countersink angle fits all standard centers.
  • Wide Usages: Center drill bits can be used to make conical holes for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking, as well as for producing center holes in components or workpieces with requiring machining between centers.
  • Available for all Kinds of Materials: Metal, Alloy, Copper, Iron, Wood, Aluminum, and so on.

A set of Center Drill Bits includes the 6 sizes:

  • #1 with 1/6” body diameter & 0.04” drill tip diameter
  • #2 with 1/6” body diameter & 0.06” drill tip diameter
  • #3 with 1/5” body diameter & 0.08” drill tip diameter
  • #4 with 1/4” body diameter & 0.10” drill tip diameter
  • #5 with 1/3” body diameter & 0.12” drill tip diameter
  • #6 with 1/2” body diameter & 0.20” drill tip diameter


  • Center drill bits are used to drill a conical hole for a lathe center in order to make a starting point for a standard twist drill so as to prevent the twist drill from walking.
  • Center drill bits are also used for producing center holes in components or work-pieces with required machining between centers.


  • Choose a match type of center drill bits according to the hole type and the straight hole size of the machined parts.
  • The heat treatment hardness of the center drill bit is between 63-66HRC appropriate.
  • Wash the rust-proof grease before using the center drill bit, so as to avoid chip sticking on the cutting edge.
  • The surface of the work-piece should be smooth to avoid center drill bit being damaged.
  • The center drill bit should achieve the required position accuracy before drilling.


  • Stop immediately in the processing of abnormality when using the center drill bit and find out the reason before processing;
  • Pay attention to the condition of center drill bits, especially the wear and tear of the cutting edge and timely repair;
  • Clean the center drill bit and use the oil after using, keep center drill bits properly.

Shipping Notice:

After 3-5 business days, if your order is not shipped yet, this is because we are preparing the stock due to the high demand for some items. Rest assured your order will be shipped early next week from our warehouse in Chicago, Illinois. 

If you need more information with your order, don't hesitate to contact us, we are more than happy to help.

We believe & care about our customers happy. We stand behind our words, take high responsibility on your order, and ensure it arrives on time in the highest quality.


After placing your order, our efficient Production Team will prepare, pack and ship your order with utmost care within 1-2 business days (in the unlikely event it can take more 3-5 days with high volume items to cause we need time to restock, don't worry, our team is working on it).

Then this following shipping time will be applied:

United States:
USPS Domestic Shipping: 2-5 business days

Canada, Europe, Australia, New Zealand:
International Express Shipping: 7-10 business days

Other Countries:
International Express Shipping: 10-20 business days

100% Satisfaction Guarantee

We offer a 100% Satisfaction Guarantee. We will refund your money if you are not satisfied with your order due to the company's fault. This is to ensure to provide a risk-free shopping experience and make sure that the offer is not taken advantage of.

In the unlikely event that your order hasn't arrived within 30 days (due to lost mail, etc.) please contact us and we will resend your order or refunds 100% money.