supply of cast steel components for frame structure consists of 4 items for x-class locomotives as mentioned below without foundation holes. item no 1 - bearing box left-part finished- drg no. goc / x / sk-1-14638 sheet 1 of 4 qty-2 nos item no 2 -bearing box right-part finished-drg no. goc / x / sk-1-14638 sheet 2 of 4 qty-2 nos item no 3 - horn stay lh-drg no. goc / x / lr-13-07002 ( item no-1 ) qty-2 nos item no 4 - horn stay rh-drg no. goc / x / lr-13-07002 ( item no-2 ) qty-2 nos note 1. item no 1 to 4 consists of one set. 2. for equivalent material specification refer goc / x / spec-x-032 [ warranty period: 30 months after the date of delivery ]