supply of set of return crank consists of 2 itemsset of return crank consists of 2 items, supply of set of return crank consists of 2 items for x-class locomotives conforming to the following drawings. item no ( 1 ) -lower ( hp ) return crank confirms to slm index no. x / 12 / 19a / m ( item no1 ) and goc drg no. goc / x / sk-3-13921 sh13 of 14, qty 2nos / set item no ( 2 ) -upper ( lp ) return crank confirms to slm index no. x / 12 / 20a / m ( item no 1 ) and goc drg no. goc / x / sk-3-13921 sh14 of 14, qty 2nos / set note: 1. item no ( 1 ) & ( 2 ) consists of one set. 2. for equivalent material specification refer goc / x / spec-x-032 3. each item should have one integral test piece and handed over for inspection before machining. [ warranty period: 30 months after the date of delivery ]