ANCLLO 6 Pack Precision Telescopic Gauge, 8 150 mm Internal T Bore Hole Gauge Set

Easy to adjust for accurate measurement. Professional Precision Tool Set! Handles are rigidly attached to the contact plungers and are automatically self-centering Double action rigid handle with self centering feature for quick checking of holes, slots and recess up to 6 inch deep. The ends of both contact are head treated stainless steel and precision ground to a radius to allow proper clearance on the smallest hole the gage will enter. 6pcs gauge set : 5/16 inch - 6 inch (8mm - 150mm): 8-12.7, 12.7-19, 19-32, 32-54, 54-90 and 90-150mm gauges.