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23YEARS
SKU: 100-120  |  MPN: MAG SHIM METRIC

FastCap Magnetic Shim Sets

Regular price $26.90

Unit of Measure

The Perfect Space in Inches or Milimeters!

If you are looking for a fast and convenient way to set the precise height/depth of your tools, look no further. Mag Shims are the easiest way to set your saw blade height, router bit depth, fence spacing on your table saw, or drill press depth. There are so many applications these can be used for that we simply cannot list them all. Easily stick together or take apart the strong magnetic shims to get a perfect setup in seconds! You'll be amazed at the quality and accuracy of these sets.

They are available in Imperial or Metric sizes. Imperial includes eight 1/8" thick shims and two 1/16" steel spacers. Metric includes six 2mm thick shims and two 1mm steel spacers.

The Imperial set even includes a yellow spacer with a captive craft knife, letting you scribe lines using as many red spacers as you need to create your offset!

And both models are available in a money-saving set.

Fastcap Magnetic Shim Sets: The Ultimate Setup Tool for Woodworkers

Setting precise blade heights, router bit depths, and fence offsets is essential for clean, accurate woodworking results. Fastcap’s Magnetic Shim Sets, available in both imperial and metric measurements, make these adjustments fast, repeatable, and incredibly easy—no rulers required!

Stackable, Magnetic Precision

Metric & Imperial FastCap Magentic Shims

Each shim in the set features strong embedded magnets that allow the pieces to stack securely, giving you precise and repeatable setups. The imperial set includes 1/16" thick red shims, while the metric set includes 2mm thick blue shims. Need a specific height or distance? Just stack the required number of shims and you're ready to go.

Built-In Marking Tool

Bonus marking blade in the Imperial Set

New in the imperial set is a yellow spacer with a built-in kraft knife blade. Simply rotate the blade out, stack your desired number of shims, and use the knife to scribe an accurate reference line directly onto your workpiece. It’s perfect for layout tasks where measuring and marking need to be both quick and accurate.

Marking with the bonus blade.

Ideal for a Variety of Workshop Tasks

Three applications.

Whether you're setting:

  • Router bit height
  • Table saw blade height
  • Fence offset distance

These magnetic shims eliminate the guesswork and remove the need to fumble with rulers or feeler gauges. The magnetic feature holds everything in place while you adjust, saving time and improving accuracy.

Corner Radius Guides Included

Shim with multiple radii marked.

Fastcap didn’t stop at setup tasks. Each shim includes radius markings on both the interior and exterior corners, so you can measure or trace common corner radii directly onto your projects.

Great for marking radii on projects.

Space-Saving and Shop-Ready

The magnets making storage a cinch!

When you're done, simply restack the shims for compact storage. The magnetic feature keeps everything together in one tidy bundle—ready for the next project.

Buy and Save

Get the most flexibility by picking up both the imperial and metric shim sets in a money-saving combo pack. It’s the ideal setup solution for woodworkers, makers, and professionals who demand precision and efficiency in their shop.


Shop Fastcap Magnetic Shim Sets at Infinity Cutting Tools and make your next setup faster, more accurate, and easier than ever.

Frequently Asked Questions

What can I use FastCap Magnetic Shims to set?

They are ideal for setting saw blade height, router bit depth, table saw fence spacing, and drill press depth, plus many other shop setups. See related table saw accessories.

What's the difference between the Imperial and Metric sets?

The Imperial set includes eight 1/8" thick shims and two 1/16" steel spacers. The Metric set includes six 2mm thick shims and two 1mm steel spacers.

How do the shims stay together?

The shims are strongly magnetic, so they easily stick together or take apart. This lets you stack them to a precise dimension and get a perfect setup in seconds.

Does the Imperial set include anything extra?

Yes. The Imperial set includes a yellow spacer with a captive craft knife, letting you scribe lines using as many red spacers as you need to create your offset.

Can I buy both Imperial and Metric together?

Yes. Both models are available individually and in a money-saving combined set, so you can cover both measurement systems in one purchase.

How thick are the Imperial shims?

The Imperial set uses 1/8" thick shims (eight of them) plus two 1/16" steel spacers, so you can build offsets in fine increments.

Will these help me set saw blade height accurately?

Yes, setting blade height is one of their primary uses. Stack the shims to your desired height and rest them against the blade. Browse more saw blades and accessories.

Are these shims good for router setups?

Absolutely. They make setting router bit depth quick and repeatable, which is handy whenever you need to match a precise cut height in your shop.

How many shims come in the Metric set?

The Metric set includes six 2mm thick shims and two 1mm steel spacers, letting you reach a wide range of metric dimensions.

What makes magnetic shims better than a tape measure?

Magnetic shims give you a physical, repeatable reference you simply stack to dimension, removing the guesswork of reading a tape. Explore more measuring and layout tools for precise setups.