supply of the field trial of high performance rail clamp ( hprc ) of robel clamp ( trial item ) for standard fish plates for 52 kg ( i ) rdso / t-3714 ( length= 1100 mm ) for 52kg. robel 68.05 version 6 ( torque-580 n-m ) [ warranty period: 30 months after the date of delivery ] , the field trial of high performance rail clamp ( hprc ) of robel clamp ( trial item ) for standard fish plates for 60 kg rails ( ii ) rdso / t-3714 ( length= 1100 mm ) for 60kg. robel 68.05 version 13 ( torque-580 n-m ) [ warranty period: 30 months after the date of delivery ] , the field trial of high performance rail clamp ( hprc ) of robel clamp ( trial item ) for standard fish plates for 52 kg rails ( iii ) rdso / t-5915 ( length= 1000 mm ) for 52kg. robel 68.05 version 6 ( torque-580 n-m ) [ warranty period: 30 months after the date of delivery ] , the field trial of high performance rail clamp ( hprc ) of robel clamp ( trial item ) for 60 kg rails ( iv ) rdso / t-5916 ( length= 1000 mm ) for 60kg. robel 68.05 version 13 ( torque-580 n-m ) [ warranty period: 30 months after the date of delivery ] , dial type torque wrench 100-850nm with socket 41 mm and sledge hammer for fishplate destressing during installation. [ warranty period: 30 months after the date of delivery ]