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Futaba Servo Horn Drill Gauge 12515MmFutaba Servo Horn Drill Gauge 12515MmFeatures of Futaba Servo Horn Drill Gauge 12515Mm Features: Measures Holes From The Center Point Of A Servo Horn In Half Millimeter Increments (12.5 13 13.5 14 14.5 And 15) Transparent Green Plastic Construction Brass In..