Metric Sizes

Identify commonly used metric nuts, bolts and threaded parts.

Inch Sizes

Check common SAE and inch-thread hardware without guessing.

Fast Identification

Save time during repairs, sorting and replacement-part shopping.

Each gauge is clearly labeled to help you identify the correct size quickly.

Check both nuts and bolts using the corresponding threaded gauge.

Metric and inch components are separated by color for easier selection.

Keeps every checker organized, protected and ready for your next project.

Convenient for garages, workshops, tool cabinets and service vehicles.

Choose a Gauge

Start with the closest-looking Metric or Inch size.

Thread It Gently

Turn the nut or bolt onto the gauge without forcing it.

Read the Marking

Use the labeled size to find the correct replacement.

Does it check both nuts and bolts?

Yes. The kit includes male and female threaded gauges for checking compatible nuts and bolts.

Does it include Metric and Inch sizes?

Yes. The set is designed to identify a selection of commonly used Metric and Inch thread sizes.

Can beginners use it?

Yes. Simply test the hardware gently and read the clearly marked size.

Is it suitable for professional work?

It is useful for quick identification in garages, workshops and service environments. Always confirm critical specifications before final installation.