supply of pvc non-adhesive tape (black colour), 3/4%u201d wide x0.010 thick (20mm x0.25 mm), in rolls of 30 to 50 meters to dlw spec. no. del/spn/123 rev.r5 or latest. (size-i) i) nil ii) nil [ warranty period: 30 months after the date of delivery ] ] amm-d(d) kyn, cr