Tr12x3 Tr16x4 Tr20x4 Tr24x5 Tr26x5 Tr28x6 7H 7e LH Trapezoidal Thread Plug Ring Gauge Tr Gauges Spline Screw GO NOGODimensions: Tr12x3 LH Tr12x3 LH Tr16x4 LH Tr20x4 LH Tr24x5 LH Tr26x5 LH Tr28x6 LH Cutting Edge Diameter: 7H 7e 7HProduct...