tender for set consisting of the following brackets : 1) welding parts on under frame for ir-drdo bio-digester in cbc fitted conventional coaches as per rdso drg.no. cg-15042, alt. nil, item no. 1 & 2 or 4 & 5 :01 no. 2) bracket for outer head stock with channel for cbc uncoupling device as per rdso drg. no. cg-15045, alt. nil : 01 no. 3) bracket for outer head stock as per rdso drg.no. cg-15032, alt. nil : 01 no. 4)bracket for inner head stock as per rdso drg. no. cg-15033, alt. nil ; 01 no .