Blue Flat Wheel Nut Indicator (21-33mm)

Made from a tough durable plastic and ranging in size from 21mm to 33mm, wheel nut indicators provide a simple yet effective solution to help prevent wheel loss.

These wheel nut indicators have a melting point of 123 degrees Celsius.

Many fleets use these with Prolock and Zafety wheel nut locks to not only provide a visual indication but also prevent wheel loss as well.

Can also be known as a flat indicator, flag indicator, wheel nut marker or standard indicator.