(1) Thread Plug Gauge Size: 1"X 8 Unc 2B Screw Plug Gauge Go & No Go With Calibration Certificatet Raceable To Npl/Nabl Suitable For Holes Of Bg Freight Stock Axles To Rdso Drg. No.Wd-89025-S-03 Or Latest, (2)Thr Ead Plug Gauge 1"X 8 Unc 2A Ring Gauge Go & No Go With Calibration Certificate Traceable To Npl/Nabl Suitable B G Freight Stock Axle Screw [ Warranty Period: 30 Months After The Date Of Delivery ] [Quantity Tolerance (+/-): 5 %Age , Item Category : Normal , Total Po Value Variation Permitted: Max 8 La Cs ] ]