supply of brake head complete consists of 4 items as per icf drgbrake head complete consists of 4 items as per icf drg,brake head complete consists of 4 items as per icf drg no. emu 3-1-004-alt m /2 & nylon bushes as per drg no.emu-3-2-050, alt.d/4 (item no.4 & 7 ) for convention type t railer coach. note:- alternate steel to is 2062-fe 410 wc, may be used in lieu of is 2062-fe 410 cu wc as indicated in relevant drg. itself. (bushes to be procured from rdso approved sources only) [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]