( 1 ) Curve Switch 60 Kg ( 1 in 8. 5 ) with fittings. T- 4966. ( 2 ) Manufacture and supply of 11200 mm Over Riding Switches ( Curved ) for BG 1 in 16 Turnout- 60 kg rail on PSC Sleepers to RDSO Drg. No. T- 5692 Alt- 3 ( 3 ) Manufacture and supply of 10125 mm Over Riding switches ( Curved ) for BG 1 in 12 etc.