tender for set of modified stopper vertical & horizontal shim for wdp4d/wdm3d locos consisting of04(four) items as follows: (i) modified wdp4d stopper vertical shim. material: steel, is-2062. thickness: 5mm.material: steel. is - 2062. as per howrah diesel shed sketch no.581a/08/2021/hwh. qty/set: 10 nos. (ii)modified wdp4d stopper horizontal shim. material: steel, is-2062. thickness: 5mm. material: steel. is-2062.as per howrah diesel shed sketch no.581b/08/2021/hwh qty/set: 10 nos. (iii) modified wdp4d stopperhorizontal shim. material: steel, is-2062. thickness: 3mm. material: steel. is -2062. as per howrah diesel shedsketch no.581b/08/2021/hwh. qty/set: 10 nos. (iv) modified wdm3d stopper shim. material: steel, is-2062.thickness: 5mm. as per howrah diesel shed sketch no. 581c/08/2021/hwh qty/set: 10 nos.