QWORK® Telescopic Gauges 8 mm 150 Inner Diameter Adjustable, 6 Pieces/Set

LONG USE TIME Made of 65 manganese steel with heat treatment, it has the advantage of no rust, long service life. Measuring range: 6 sizes of gauges come in a matching case. Includes 8-12.7mm, 12.7-19mm, 19-32mm, 32-54mm, 54-90mm, 90-150mm. Adjustment: Smooth, sensitive adjustment for better feeling, more accurate measurements. Wide Application Suitable for measuring deep and shallow holes, slots, etc. Efficient: even contact pressure, can detect the inner diameter in a hole, quick check holes, slots and recess up to 150 mm depth.