Description: The Cat standard bit system is comprised of replaceable Angling Plate. The bit shaft fits into the angling plate to prevent the bits from rotating. This angling plate allows for 5˚ Blade cast angle.Compatible Models: 120H, 12H, 135H, 140HAttributes:Material: CarbideApplication:Dirt and gravel reclamation, oil road reclamation, snow and ice removal, and cut potholes and washboards. Consult your owner's manual or contact your local Cat Dealer for more information.