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ZOBO Central Drilling Systems

Centralized drilling systems with unique detachable centers.High-speed steel or Carbide, for precision and long life


ZOBO System 2 - For Cabinet Making and Fine Carpentry

Available in Imperial sizes from 1/2" to 2-1/2"  (and metric: 10 mm - 65 mm).

Guide pin, System 2Centering bit, System 2Centering points and pilot drill bits have tapered shaft end for friction fit : 2.5 mm diameter for 1/2 to 2" (10-50 mm), and 3.5 mm, over 2" (51-65 mm) sizes.

Bit and shank are in one piece.

Shank sizes 9 mm, 12 mm and 16/12 mm, depending on bit size.

Centering point included with sale of bit. Other centering devices available.

Go to System 2

Zobo System 3 drill bitZOBO System 3 - For Drilling in Heavy Timbers

Available in sizes from 1-1/2" to 3-3/4", (metric: 15 mm to 130 mm), up to 200 mm by special order.

Centering point, System 3Pilot drill bit, System 3Centering points and pilot drill bits use normal parallel shaft ends and set screws to fasten.

Bit and shank are screwed together (removable, but always delivered together). 

Pilot drill bit, System 3

Shank sizes go from 9 mm, 12 mm, 20/13 mm to 30/16 mm.

No centering point included with sale of bit; be sure to select the point, pilot drill bit bit, or guide pin you need.

Go to System 3

Zobo is a complete drilling system. It has no equal. It comes with a variety of centers: guide pins, centering points, pilot drill bits; and extensions. 

Lead in from one side, finish from the other. No burrs or tear-out whatsoever.

Precise counter-sinking and enlarging of existing holes.

Use freehand or in stationary, factory applications, furniture or timber processing.

For every conceivable professional use and application: cabinet making, timber work, musical instruments, organ pipe making, composite stone (kitchen counter), laminates, stair making and more.

Available in Imperial and metric dimensions:

  • Imperial:
  • Metric: from 15-130 mm (5")
  • Up to 200 mm (7-7/8") by special order.
  • Optional: Deep drilling system, up to 10 feet in a straight line or on angle.

Save money in the long run.

ZOBO bits can be resharpened up to 30 times.

Drill bits red hot in the ovenSwiss quality in materials and fabrication of bits.
Hardened and precision milled and polished for long life and lasting cutting power.

Chromium-plated for long service life.
Hardened and machined drill bit shanks. Chrome-plated surface.

Drill deeper
Shank extensions available up to 15¾" (400 mm). Bits have internal thread so they attach very firmly and precisely to extensions.

Long service life.

Zobo bits are made of premium quality material. High-alloy premium steel is processed then precisely machined, hardened and sharpened, thus ensuring quality cutting output and a long lifetime performance. Surfaces are chromium plated to reduce friction and heat buildup, and minimize burn marks in material.

Surface quality - just as if it had been planed

Thanks to the precise tapered pre-cutters and the main cutting edges of the bit, the surface finish of the drilled material is very smooth and without burrs.

Drill holes for every desired diameter.

From Imperial sizes 1/2" to 4", incremented by 1/16", or metric sizes 10 mm to 130 mm, every millimetre is available as standard. Special sizes up to an accuracy of 1/100 mm and diameters of 131-200 mm can be delivered upon request.


Covered bridge"Gary, Just thought you would want to know that we used 4 Zobo bits along with the 1.25 pilot hole [using the 24" Holzmaster Doublecut Auger Bit] only sharpening each of them twice to drill +/- 2000 holes half of which were through 6" of Douglas fir the other half was through 22" douglas fir. We did all of this using only 1/2" Milwaukee magnum drills. We could not have used a better system. Thanks for your help. Chad"
(For photos, see Bartonsville Covered Bridge Facebook Page)

HOW TO CHOOSE: Chromium Steel Bits or Tungsten Carbide Bits?

Compared to common bits for drilling in plastic materials or to Forstner-type bits, ZOBO chromium steel bits are made of high-quality hardened chromium steel. The cutting edges are razor sharp. The bits cut very finely and enable a quality surface finish. The bits with tungsten carbide cutting tips are meant for use in drilling slab type material such as chipboards or plywood.

Tungsten Carbide bits are only available in System 3.


or Carbide


Acrylic Glass






System 2
System 2
System 3
System 3

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