Counterbores
These counterbores are primarily for use on portable drills and clamp to the center drill with a set screw. Available in 3/8 to 2-1/2" for center drills sized 3/16 to 1/2".
Additional counterbores can be found in our Drill Bits for Boring Machines section.
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Carbide Processors
HSS Multi Spur Adjustable Counterbore, 1-1/4" OD, 1/2" ID, HS120-62346Multi-Spur Counterbore - High Speed Steel - HS120-62346; 1 1/4 Cutting diameter, 1/2 Hole diameter.&…
MSRP: $166.88$121.36 -
Carbide Processors
Multi-Spur Counterbore, 2-1/2 OD, 1/2 ID, HS120-62355Multi-Spur Counterbore, HSS - HS120-62355; 2 1/2 Cutting diameter, 1/2 Hole diameter. Counterbore o…
$155.09 -
Carbide Processors
HSS Multi Spur Counterbore, 1-3/4 OD, 1/2" ID, HS120-62350Multi-Spur Counterbore - High Speed Steel - HS120-62350; 1 3/4 Cutting diameter, 1/2 Hole diameter. …
MSRP: $150.47$107.48 -
Carbide Processors
CounterBore, 3/8 OD, 3/16 ID, 5" Cut Length, 7" OAL, HS-3165212Counterbore, 3/8 Cutting Diameter, 3/16 Center Drill Diameter,5 Cut Length, 7 Overall Length. M2 HSS…
MSRP: $79.10$65.91 -
Carbide Processors
Clamp-On Adjustable CounterBore, Carbide Tipped 1 OD, 3/8 ID, Carbide Processors HS123CT-62313Carbide Tipped Adjustable Counterbore, Counterboring Flat Bottom Holes- 1 Cutting Diameter, 3/8 Cent…
MSRP: $120.40$97.65 -
Carbide Processors
Adjustable Counterbore Drill, 1/2 Dia, 3/16 Center Drill, HS121-62250Adjustable Counter Bore - M2 HSS, Threaded Shank, HS121-62250 Outside Diameter: 1/2" Inside Diameter…
MSRP: $57.04$47.53 -
Carbide Processors
Adjustable CounterBore, HSS 7/16" Dia, 3/16" Center Drill, 1/2" Shank, Carbide Processors HS122-62264HSS Adjustable CounterBore for Counterboring Flat Bottom Holes- Carbide Processors HS122-62264;…
MSRP: $48.82$40.68 -
Carbide Processors
Adjustable CounterBore, HSS 7/16" Dia, 7/32" Center Drill, 1/2" Shank, Carbide Processors HS122-62265HSS Adjustable CounterBore for Counterboring Flat Bottom Holes- Carbide Processors HS122-62265;…
MSRP: $51.13$37.21 -
Carbide Processors
Clamp-On Adjustable CounterBore, Carbide Tipped 1-3/8 OD, 7/16 ID, Carbide Processors HS123CT-138716Carbide Tipped Adjustable Counterbore, Counterboring Flat Bottom Holes- 1 3/8 Cutting Diameter,…
MSRP: $131.20$109.33 -
Carbide Processors
Clamp-On Adjustable CounterBore, 1-1/2 OD, 1/2 ID, Carbide Processors HS123-62318Adjustable Counterbore, Counterboring Flat Bottom Holes- 1 1/2 Cutting Diameter, 1/2 Center Drill Di…
MSRP: $116.36$112.50 -
Carbide Processors
Clamp-On Adjustable CounterBore, 1-1/4 OD, 1/2 ID, Carbide Processors HS123-62316Adjustable Counterbore, Counterboring Flat Bottom Holes- 1 1/4 Cutting Diameter, 1/2 Center Drill Di…
MSRP: $108.33$78.86 -
Carbide Processors
Clamp-On Adjustable CounterBore, 1" OD, 1/2 ID, Carbide Processors HS123-62314Adjustable Counterbore, Counterboring Flat Bottom Holes- 1 Cutting Diameter, 1/2 Center Drill Diamet…
MSRP: $73.40$53.44 -
Carbide Processors
Clamp-On Adjustable CounterBore, 1" OD, 7/16 ID, Carbide Processors HS123-62313-716Adjustable Counterbore, Counterboring Flat Bottom Holes- 1 Cutting Diameter, 7/16 Center Drill Diame…
MSRP: $73.40$48.35 -
Carbide Processors
Clamp-On Adjustable CounterBore, 1" OD, 3/8 ID, Carbide Processors HS123-62313Adjustable Counterbore, Counterboring Flat Bottom Holes- 1 Cutting Diameter, 3/8 Center Drill Diame…
MSRP: $73.40$53.44 -
Carbide Processors
Clamp-On Adjustable CounterBore, 1" OD, 5/16 ID, Carbide Processors HS123-62312Adjustable Counterbore, Counterboring Flat Bottom Holes- 1 Cutting Diameter, 5/16 Center Drill Diam…
MSRP: $73.40$53.44 -
Carbide Processors
Clamp-On Adjustable CounterBore, 7/8 OD, 7/16 ID, Carbide Processors HS123-62311Adjustable Counterbore, Counterboring Flat Bottom Holes- 7/8 Cutting Diameter, 7/16 Center Drill Dia…
MSRP: $65.22$47.47 -
Carbide Processors
Clamp-On Adjustable CounterBore, 7/8 OD, 3/8 ID, Carbide Processors HS123-62310Adjustable Counterbore, Counterboring Flat Bottom Holes- 7/8 Cutting Diameter, 3/8" Center Dri…
MSRP: $65.22$47.47 -
Carbide Processors
Clamp-On Adjustable CounterBore, 7/8 OD, 5/16 ID, Carbide Processors HS123-62309Adjustable Counterbore, Counterboring Flat Bottom Holes- 7/8 Cutting Diameter, 5/16 Center Dri…
MSRP: $64.65$47.07 -
Carbide Processors
Clamp-On Adjustable CounterBore, 3/4 OD, 5/16 ID, Carbide Processors HS123-62308Adjustable Counterbore, Counterboring Flat Bottom Holes- 3/4 Cutting Diameter, 5/16 Center Drill Dia…
MSRP: $61.15$44.52 -
Carbide Processors
Clamp-On Adjustable CounterBore, 3/4 OD, 1/4 ID, Carbide Processors HS123-62307Adjustable Counterbore, Counterboring Flat Bottom Holes- 3/4 Cutting Diameter, 1/4 Center Drill Diam…
MSRP: $61.15$44.52