Featured Categories

  • Tools & Machining
  • Shipping, Packaging & Office Supplies
  • Plumbing
  • Safety

Shop Categories

  • Abrasives & Polishers
  • Adhesives & Tapes
  • Electrical Supplies
  • Electronics
  • Fasteners
  • Food Service & Restaurant Supplies
  • Furniture, Linens & Decor
  • Grounds & Outdoor
  • Hardware & Building Materials
  • Heating & Cooling
  • Janitorial & Cleaning Supplies
  • Lab Equipment & Supplies
  • Lighting
  • Material Handling
  • Medical & Personal Care
  • Paint, Coatings & Supplies
  • Plumbing
  • Power Transmission
  • Pumps
  • Raw Materials
  • Safety
  • Shipping, Packaging & Office Supplies
  • Storage & Workspace
  • Test Instruments & Gauges
  • Tools & Machining
  • Vehicle Maintenance
  • Welding, Soldering & Brazing
  • About Us
  • Deals
  • Contact Us

Added to Cart

Skip to Main Content Accessibility Statement
FREE SHIPPING on orders over $50 after you . Restrictions Apply
Zoro Homepage
Clipboard Icon Clipboard Icon Quick Order
User Headset Icon User Headset Icon Support
0
0
Cart
  • Low prices on everyday needs. Shop Zoro Select
  • Don't miss these limited time offers. Shop All Deals
  • Get 30 days to pay with Net 30. Apply Now
  1. Home
  2. /
  3. Tools & Machining
  4. /
  5. Cutting Tools
  6. /
  7. Porting Tools & Counterbores

Porting Tools & Counterbores (993 items) - Page 28

Keo Counterbore, Decimal Inch, 3 in 902-000-090
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G421725336
Mfr # 902-000-090
product price: 
$61.89
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-099
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G621726720
Mfr # 902-000-099
product price: 
$63.69
/ea
Keo Counterbore, Metric, 100 mm 902-000-258
Keo

Counterbore, Metric, 100 mm

Zoro # G421725374
Mfr # 902-000-258
product price: 
$92.19
/ea
Keo Counterbore, Decimal Inch, 6 in 902-000-304
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G821727848
Mfr # 902-000-304
product price: 
$146.99
/ea
Super Tool Counterbore, 13/16" D, Carbide Tipped 56410
Super Tool

Counterbore, 13/16" D, Carbide Tipped

Zoro # G0330141
Mfr # 56410
product price: 
$120.99
/ea
Super Tool Counterbore, 1-1/8" D, Carbide Tipped 56415
Super Tool

Counterbore, 1-1/8" D, Carbide Tipped

Zoro # G0329940
Mfr # 56415
product price: 
$144.99
/ea
Super Tool Counterbore, 1-3/16" D, Carbide Tipped 59816
Super Tool

Counterbore, 1-3/16" D, Carbide Tipped

Zoro # G0329782
Mfr # 59816
product price: 
$155.99
/ea
Cleveland Counterbore, 1.875" L, 0.188" dia., Bright C46551
Cleveland

Counterbore, 1.875" L, 0.188" dia., Bright

Zoro # G4771757
Mfr # C46551
product price: 
$29.89
/ea
Cleveland Port Tool, 2.813" L, 0.250" dia., Bright C46902
Cleveland

Port Tool, 2.813" L, 0.250" dia., Bright

Zoro # G4832368
Mfr # C46902
product price: 
$152.99
/ea
Link Ua4-5MM Metric Shcs HSS Counterbore 72-L2-512
Link

Ua4-5MM Metric Shcs HSS Counterbore

Zoro # G7643976
Mfr # 72-L2-512
product price: 
$26.65
/ea
Scientific Cutting Tools Port Tool, MS33649, Solid, 5/16-24 UNJF MS33649-2S
Scientific Cutting Tools

Port Tool, MS33649, Solid, 5/16-24 UNJF

Zoro # G8099305
Mfr # MS33649-2S
product price: 
$227.99
/ea
Scientific Cutting Tools Port Tool, MS16142, Solid, 9/16-18 UNF MS16142-6S
Scientific Cutting Tools

Port Tool, MS16142, Solid, 9/16-18 UNF

Zoro # G8435323
Mfr # MS16142-6S
product price: 
$251.99
/ea
Scientific Cutting Tools Port Tool, MS16142, Reamer, 7/16-20 UNF MS16142-4R
Scientific Cutting Tools

Port Tool, MS16142, Reamer, 7/16-20 UNF

Zoro # G7550295
Mfr # MS16142-4R
product price: 
$268.99
/ea
Scientific Cutting Tools Port Tool, MS33649, Reamer, 1/4-28 UNJF MS33649-1R
Scientific Cutting Tools

Port Tool, MS33649, Reamer, 1/4-28 UNJF

Zoro # G8170136
Mfr # MS33649-1R
product price: 
$307.99
/ea
Internal Tool A Nc-203-250 N/C Counterbore 85-2031
Internal Tool

A Nc-203-250 N/C Counterbore

Zoro # G800402360
Mfr # 85-2031
product price: 
$56.29
/ea
Super Tool Reduced Shank Counterbore, 1-9/16" D 52250
Super Tool

Reduced Shank Counterbore, 1-9/16" D

Zoro # G0331587
Mfr # 52250
product price: 
$232.99
/ea
Hhip M3.5 X 3.7mm HSS 3 Flute Straight Shank Solid Pilot Counterbore 2007-0053
Hhip

M3.5 X 3.7mm HSS 3 Flute Straight Shank Solid Pilot Counterbore

Zoro # G2468245
Mfr # 2007-0053
product price: 
$14.39
/ea
Cleveland Port Tool, 5.375" L, 0.500" dia., Bright C46439
Cleveland

Port Tool, 5.375" L, 0.500" dia., Bright

Zoro # G4852281
Mfr # C46439
product price: 
$215.99
/ea
Link 14MM HSS Se 14.68 X 16.67 Drill 21.82 Cbore 15.87 Shank 66.67 Oal 75-L2-527
Link

14MM HSS Se 14.68 X 16.67 Drill 21.82 Cbore 15.87 Shank 66.67 Oal

Zoro # G7637335
Mfr # 75-L2-527
product price: 
$46.99
/ea
Super Tool Counterbore, 17/32" D, Carbide Tipped 5775312
Super Tool

Counterbore, 17/32" D, Carbide Tipped

Zoro # G0330449
Mfr # 5775312
product price: 
$135.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2812" (9/32) 25518-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.2812" (9/32)

Zoro # G7161956
Mfr # 25518-C3
product price: 
$142.99
/ea
Porting Tools & Counterbores (993 items) - Page 28
  • First
  • Previous
  • 28
    of 28 pages
How was your search?

About Porting Tools & Counterbores

Porting Tools & Counterbores are used to improve the flow of air or gas in an engine, turbine, compressor, and more. They are typically used to reduce turbulence in the airflow and increase performance.

Types of Porting Tools & Counterbores

Chainsaw porting tools are commonly used for small engines like lawnmowers, as they can be adjusted easily and quickly. Ported tools are designed for larger engines such as those found in cars and motorcycles. Porting supplies include special cutting tools that allow for precise modifications to be made with minimal effort.

How Porting Tools & Counterbores are Made

Porting tools are usually constructed from hardened steel or aluminum alloy materials that can withstand high temperatures and pressures associated with engine operations. Special compounds may also be applied during the manufacturing process to ensure optimal performance.

Industries that use Porting Tools & Counterbores

Porting Tools & Counterbores can be found in a variety of industries including automotive, aerospace, marine, industrial machinery, and power sports. Professionals such as mechanics, engineers, machinists, technicians often use these tools on the job.

Find the Porting Tools & Counterbores You Need at Zoro

Looking for a specific item? Use our robust search tool to find it by name or keyword, or use our handy filters to narrow down our full assortment. You can also check out our whole selection of Porting Tools & Counterbores along with other tools or equipment to ensure you have all you need to tackle the job, especially if you're taking on a DIY project for the first time.

Plus, when you shop at Zoro, you'll always enjoy competitive prices on tons of great brands you know and trust. We make the shopping experience as fast and seamless as possible with free shipping on orders over $50 for registered users, Net 30 payment terms for qualifying customers, and an unparalleled customer service experience.

Related Categories

Drill BitsTapsHole Saws & CuttersCountersinks, Center Drills & Spotting DrillsWrenches
Sockets & RatchetsMeasuring and Layout ToolsKnives, Cutters & SnipsScrewdrivers and NutdriversClamps
counter bore pilotmetric counterbore set5/8 counterborepilot counterboreinterchangeable pilot counterbore
high speed steelscientific cutting toolsmetric shcs1-1/4 in counterboremetric counterbore

Sign up and save

Take 10% off your next order when you sign up for Zoro emails. Subscribe now to receive your promo code via email.

Follow us

  • Facebook
  • YouTube
  • LinkedIn
  • Instagram
Every part plays a part

Information

  • About Us
  • Accessibility
  • Careers
  • Inclusion
  • Giving Back
  • Resource Hub
  • Returns
  • Shipping

Shopping

  • Brands
  • Collections
  • My Account
  • Payments
  • Deals
  • Sitemap
  • Track My Order

Services

  • Customer Service
  • FAQs
  • Net 30 Terms
  • Reseller Program
  • Sell on Zoro
  • Participate in Research
  • Tax Exemption

Zoro, Inc

Connect

Customer service from real people

  • Phone: (855) 289-9676
  • Contact Us

© 2011-2026 Zoro Tools, Inc. All rights reserved.
  • Terms & Conditions
  • Terms of Access
  • Privacy Policy
Zoro, Inc