tender for manufacture and supply of o.r. fan shaped curved switch for 1 in 12 t/o (b.g.) 60kg on pscsleeper to rdso drg. no. t-4219 with latest alteration, and specification irs-t-10-2000 (with latest alterations)complete with all parts as listed in the drawing including plate screw but excluding ssd, grooved rubber soleplates, insulating liners, elastic rail clips, fish plates & fish bolts.