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 20˚ 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.