How to fast and accurately gauge the drilled holes or screw nuts on rimless frame? Hole gauge did that. 2 sizes are available on each and every gauge pin which totally 10 gauge pins included. Well-made of High Speed Steel, rustproof, it is accurate to 0.01mm. Sized gauge pin is able to easy accurate measurement.
Benefits Fast accurate gauge for drilled holes on rimless frame and screw nuts; 20 dimensions available; Be accurate to 0.01mm; Well-made of High speed steel gauge pins; rustproof;