If your order arrives damaged or defective, email support@arvonelle.com with your order number and a photo. We replace it or refund it — you don't have to argue for it.
$12.99
Free US shipping
PCB Micro Drill Bits, 3.175 mm Shank, 10 of One Size
$12.99 USD
$12.99 USD
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30-day returns
A part breaks in the first year? We send a new one free
One to two weeks, tracked. Shipping is free.
30-day returns
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Description
Ten bits of the size you actually keep breaking.
Every assortment set has the same problem: you snap two 0.8 mm bits on a Saturday and the box still has nine sizes you will never touch. So we sell them the other way round - one size, ten bits, and you buy the size you use.
- Tungsten carbide, 3.175 mm (1/8 inch) shank. That shank drops straight into the drill press chuck and into every rotary tool.
- 38 mm long, 10 mm flute. Standard PCB bit geometry.
- Colored collar per size so you can grab the right one without a caliper. The collar color marks the size.
Stock up: three packs for $29.99
The fine sizes are consumables, and most people come back for the same size within a month. Pick 3 packs (30 bits) and you get thirty bits of your size for $29.99 instead of $38.97 - one parcel, one wait.
Which size do you want
Ten single sizes, every tenth of a millimeter from 0.1 to 1.0 mm, ten bits in a pack.
0.1 to 0.4 mm - watch screws, the finest vias, pilot holes in a movement plate. These are the most delicate sizes, so run them slow.
0.5 to 0.8 mm - the working range for circuit boards. If you are buying one pack and you are not sure, buy 0.8.
0.9 to 1.0 mm - component legs, terminal pins, small brass.
If you do not know yet, there are seven mixed packs instead: 0.1 to 1.0, 0.3 to 1.2, 0.5 to 1.4, 0.6 to 1.5, 1.1 to 2.0, 1.6 to 2.5, and 2.1 to 3.0 mm - plus a starter kit of three mixed packs (30 bits, 0.1 to 2.5 mm) for $39.99. The last two ranges go past what most boards need and into small brass and plastic.
Every size here fits the drill press chuck, which closes at 4 mm. On a machine running on about 24 watts, feed the 3 mm carbide bits with a light hand.
Need a size that is not in the list
Write to us and we will try to get it. These bits are made in hundredths of a millimeter - 0.72, 0.87, 1.15 and so on - and we list the round sizes because that is what most people need.
Tell us the diameter you need at support@arvonelle.com. We will tell you what it costs and how long it takes before you pay anything.
Getting the most from carbide
Carbide is hard and brittle. A 0.5 mm bit breaks from speed and from sideways load, not from pressure - so run it slow, let it clear, and do not lever the part. That is why there are ten in a pack.
Arrived broken? We replace it
Open the pack and count them. If any arrived snapped, tell us the size and we send a replacement pack. Nothing to return and no photograph of a shipping label required.
Delivery
Free and tracked, to the United States, Australia, New Zealand and Canada. One to two weeks. Small items like these ship on their own, so they usually arrive before the machine does.
30-day returns from the day it arrives. Return postage is yours, the price of the item comes back in full.
Shipping and returns
Free tracked shipping on every order to the United States, Australia, New Zealand and Canada, with no minimum. A few items ship to a shorter list of countries, and their page says so.
Orders leave within 2 business days. The delivery time for your country is shown under the price of each item. In the United States the Mini Drill Press, the lathes, the XYZ and XYZR micrometer stages and many of the tools ship from US warehouses and arrive in about a week or less. Items shipped from overseas take one to two weeks, a few larger ones two to four. You get a tracking number by email as soon as the parcel is scanned.
30-day returns from the day it arrives, unused and in its packaging. If it arrived damaged or faulty, we pay the return label. If you simply changed your mind, you pay the return postage and get the full price of the item back. Email support@arvonelle.com before sending anything back.
Before you order
Do I pay tax or duty? In the United States, sales tax is added at checkout where your state charges it, and the total you see is what you pay. For Australia and New Zealand nothing is added at checkout. If a carrier ever asks you for a fee on one of our parcels, don't pay it: email us first and we sort it out.
What if a part breaks? For twelve months, tell us which part and we post a new one free. No return needed.
Can I cancel? Yes, within 24 hours of ordering, no questions asked.
How do I reach you? Write to support@arvonelle.com or use the chat. A real person answers within one business day.
