CONTROL ROD FOR SLACK ADJUSTER TYPE IRSA- 600 FOR BOXN WAGON TO R. D. S. O ' S DRG. NO. WD-- 82064- S- 10- RC, ITEM NO.- 2, ALT. NO.- 12 ( TWELVE ). LENGTH OF CONTROL ROD IS 1255 ? 1mm. and RDSO ' S Specn. No. 07- ABR- 92 with amendment No- 4 of July 2000.