- Each size has a nut and bolt checker on the same gauge. 21 of the most common metric sizes!
- Thread sizes are permanently stamped (in white) onto each gauge.
- Wire cable with loop for convenient hanging. The individual gauges rotate freely on the wire cable for fast thread verification.
- Gauges are a black oxide coated high grade steel.
- SWTC-M21 Size Specifications: M3x0.5, M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.0, M8x1.25, M10x1.0, M10x1.25, M10x1.5, M12x1.25, M12x1.5, M12x1.75, M14x1.5, M14x2.0, M16x1.5, M16x2.0, M20x1.5, M20x2.5, M24x2.0, M24x3.0
- Made in the USA!
