supply of endless v-belt [precision built belt]endless v-belt [precision built belt],endless v-belt [precision built belt] having polyester cord reinforcement and neo-prene jacket with oil resistance and anti-static low stretch properties in size c-122 conforming to rdso specn. no rdso/ pe/ sp ec/ac/0059-2004 [rev-0] with amendment no.1, or latest which incorporates temperature aging and accelera ted aging test and others additional physical parameter, with only 2 successive grading nos. in a matched set of 12 belts and the grading nos falling within the range of 49 to 51 all the same nos. in each set. maximum permissi ble ash content of 5%. parameter tested as per is: 3400 part-22. [ warranty period: 30 months after the date of delivery ] ]