ring gaugesfor normal or wide rings Products nameVersionwidthNo.extentitem No.ring gaugeStandard - flat3.0mm1-3641-76mm507551ring gaugeWide - flat6.0 mm1-3641-76mm507550ring gaugeWide - domed6.0 mm1-3641-76mm507544ring gaugeStandard - flat3.0mm1-3641-76mm507546