Parts catalog Hob Komatsu: 21D-06-11540 HOB, R.H., ASS'Y (ONLY WITH ATTACHMENT) Komatsu 21D-09-86460 HOB Komatsu 21D-43-11330 HOB, R.H., ASS'Y Komatsu 21D-43-11420 HOB, R.H., ASS'Y Komatsu :