XYDESIGN 4 Pcs 3 13mm Small Hole Gauge Set Telescoping Full Round Bore Spherical Shaped Hardened Supplies

Long Time Use - Made of 65 manganese steel with heat treatment, it has the advantage of no rust, long service life. Instructions : With knurled locking device, Hole Gage expands in a hole to be measured (locks in place and then removed to determine final hole size using a micrometer or calipers). Gages Range - The 4 sizes of measuring tools are packed in a suitable storage bag. Incl. 1/8"-1/5",1/5"-3/10",3/10"-2/5",2/5"-1/2" Adjustment - Smooth, sensitive adjustment for better feel, giving more accurate measurements. Wide Usage - Full Ball Small Hole Gage is used for comparison measurement of bore diameter and groove width and similar work., Manufacturer: XYDESIGN