31 - 56mm

32 x 2.0mm Metric No Go Screw Ring Thread Gauge 6g

32 x 2.0mm Metric Go Screw Ring Thread Gauge 6g

32 x 1.5mm Metric No Go Screw Ring Thread Gauge 6g

32 x 1.5mm Metric Go Screw Ring Thread Gauge 6g

32 x 1.0mm Metric No Go Screw Ring Thread Gauge 6g

32 x 1.0mm Metric Go Screw Ring Thread Gauge 6g