tender for (old pl 30980860)high capacity rubber buffer spring for 1225 kgm capcity buffer (consisting of 4nos. per set) to rdsos sketch-k 2048, alt-nil, it-1. matl. & specification : rdsos spec-c-k210(rev-3) .rdsos sketch -k-2048,alt-nil,it-1 spec:rdsos spec-c-k210(rev-3) as per drg.no. rdsos sketch -k-2048 alt-nil, it-1 as per specn. rdsos spec-c-k210(rev-3) .