4 pc Small Bore Hole Precision Gage Set 1/8" - 1/2" Machinist Telescoping
Extra long for gaging deep and shallow holes, slots and similar work pieces. Gauge Ranges: 1/8"-1/5", 1/5"-3/10", 3/10"-2/5", 2/5"-1/2"; Probe Depth: 0.880,1.200,1.600,1.600". Material: manganese steel.