As per discussed that Chris will send 3/8 NPT-18 (ANPT tapping gauge) which has not received yet along with creating SPC against each cylinder batch as new control plan before every shipment but this process was not indicated to proceed before and we will implement in end of Feb. 2020 once cylinder built. By the way, QC team has to progress incoming material inspection against your supplying coupler CR-400, please update this soon, thanks.