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Small Hole Gauge Set (Imported) Range - 1/8" to 1/2".Ideal for checking valve guide wear and small hole diameters.Insert split ball into hole and expand by turning knob on handle.Measurement is read with outside micrometer.
Set includes:- Tool #4311 (.125-.200" range).
- Tool #4312 (.200-.300" range).
- Tool #4313 (.300-.400" range).
- Tool #4314 (.400-.500" range).
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