procurement of track machine spares., set of tungsten carbide tamping tool uni-2s / 3s ( tctt ) for unimat 2s / 3s . one set of tungsten carbide tamping tools consists of:- 1. small 2w.31.41b- 08 nos. and ( drg.no. rdso / tm / 01a / 16 ) ( rev-1 ) , 2. big - w37-1320- 08 nos. ( drg. no. rdso / tm / 01c / 16 ) . ( total no. of tools -16 ) .rdso specification no. tm / hm / 06 / 320 ( rev-3 july 2019 ) note - the average service life of tctt in a set shall be guaranteed for tamping of minimum 2, 50, 000 insertions however minimum service life of any one tctt shall not be less than 50, 000 insertions. [ acceptable make: plasser or equivalent ] [ warranty period: 30 months after the date of delivery ]