Europa Spade Drill Insert - Flat Bottom - 31mm RPTECH The JBO Thread Ring Gauge

The JBO Thread Ring Gauge (GO) for Metric Coarse threads is a precision inspection tool designed to verify external threads on components with an M14 x 2 pitch

Built around HSS-E (M35 Cob) stock and finished with a hard AcuRea coating

helping maintain sharpness and reliability during high-precision milling tasks

reliable tool changes without compromising clamping force

standard-compliant sizing: specifically matched to BSF 3/8 x 20

Europa Spade Drill Insert - Flat Bottom - 31mm RPTECH The JBO Thread Ring GaugeThe Europa Spade Drill Insert with Flat Bottom is designed for craftspeople who need clean, flat bottom holes across wood, plastic, and metal. Its flat bottom geometry and precise cutting deliver stable, burr minimized results for countersinking, dowel drilling, and recessed features. Diameter: 31 mm Bottom geometry: Flat bottom for flush bottom holes and precise fits Cutting performance: Unique geometry that promotes accurate drilling with minimal