supply of double rail tractor (drt) spares , power pack with li-on batteries and auto cut off for paras make 9 channel b-scan drt [ wa ranty period: 3 months after the date of delivery ] ] , zero degree normal probe dc 4 mhz 18/20 mm dia. [ warranty period: 3 months after the date of delivery ] ] , ss u bracket for 37 deg ap with pivots [ warranty period: 3 months after the date of delive ry ] ] , 70 degree f/b angle probe 2mhz single crystal, 20mm dia with shoe and roller [ warranty period: 3 months after the date of delivery ] ] , 37 deg f/b angle probe, 2 mhz, single crystal, 20 mm dia with shoe and roller of paras mak e 9 channel b-scan drt [ warranty period: 3 months after the date of delivery ] ]