Thread Check Inc. offers custom reversible plain plug gages in class XX thru ZZ gagemaker tolerances for checking holes and calibrating measuring equipment. Custom plain plug gages are made of quality C2 Tungsten Carbide for longer gage life. Sizes range from .761mm - 1.91mm. Custom plain plug gages are available in carbide and metric. If you have any questions about our custom plain plug gages feel free to contact us.