1. Material: stainless steel, ABS
2. Specially designed for measuring the depth of the anti-skid tread on all kinds of wheels to keep track of tyre wear
3. Clear readings and warning values for your safety
4. Cylindrical measuring rod for more accurate testing
5. Depth range: 1-25mm
6. 0-3 mm red zone means: tyre to be replaced
7. 3-5 mm yellow zone means: warning of imminent replacement
8. 5-25 mm green zone means: normal use
9. Weight: approx. 10 g
10. Size: approx. 9x2.5 cm

Method of use:
1. Push the probe up to the end
2. Then place the size black flat holder on the tyre tread
3. Push the size down to the bottom and read the value