supply of set of vee insulations etc. , set of vee insulations consisting of -- (i)insullation ring of commutator=1 no. (ii)vee ins ulations of commutator (front side)= 1 no. (iii)vee insulation of commutator (core side)= 1 no. as per hitachis drg. no.- 10r.793-522 (alt.i) shelf life of this item is 12 months. therefore delivery schedule is to be stipulated in two phases on half yearly basis & should be delivered within 3 months after man ufacturing date which is to e mentioned in the po . [ warranty period: 12 months after the date of d elivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]