Chrome 63.75mm-76.45mm Class XX Master Setting Disc-Style 3Glastonbury Gage & Southern Gage – GSG – Class XX Master Ring …Steel Master Plain Ring Gage XX 2.5101″-3.010″4886″ Class XX Master Setting DISC for Calibration of Measuring …Chrome 3.811mm-5.84mm Class XX Master Setting Disc-Style 1Glastonbury Gage & Southern Gage – GSG – Class XX Master Plug …75035 Class XX Master Plain BORE Ring GAGE .7500+.00035 Oversize 3 …