supply of pneumatic items for use in of electric locomotive for installation of kavach as per item description.pneumatic items for use in of electric locomotive for installation of kavach as per item description.,set of pneumatic items required for modification of pneumatic circuit of electric locomo tive for installation of kavach. set consists of 7 items as per annexure attached. (note: one number fr om each item sample to be got approved from consignee before bulk supply.) [ warranty period: 30 months after the date of delivery ] ] , 3/8 inch copper pipe od:9.5 mm x id: 6.3 mm x 1.6 mm thickness for modification of p neumatic circuit of electric locomotive for installation of kavach. [ warranty period: 30 months aft er the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]