Metric Thread Detective Screw Thread Gauge

Whether you're trying to identify loose screws or you just want to figure out which nuts and bolts to use where, the Thread Detective is the perfect tool. Features clearly marked gauges for quick identification of bolt size, nut diameter and thread pitch. Metric gauges are red with 11 measuring gauges. Includes heavy-wire lanyard and handy inch/mm ruler for measuring studs.
Metric (red) Thread Detectives include the following thread gauges:
* M12x1.75
* M10x1.5
* M8x1.25
* M5x0.8
* M12x1.5
* M10x1.25
* M8x1.0
* M4x0.7
* M12x1.25
* M10x1.0
* M6x1.0