These wheels have the new Black Shield treatment that provides: BENEFITS 2x the durability against rock impacts or scratches. The rim remains black with impacts. THE KEYS Double layer treatment Black anodized on the inner layer A second matte outer coat Characteristics: Use: MTB, XC Measure: 29 " Material: Aluminum Tubeless Ready tire compatible Axle: 15x110 mm BOOST, 12x148 mm BOOST Brake Type: Disc IS 6-bolt Rim width: 25mm Spoke material: steel Weight: 1595 g Recommended tire sizes: 50 to 76 mm (2.0 "or 3.0") Freewheel compatibility: SRAM-XD, Shimano (10, 11 speed) Includes: Pre-installed Tubeless, UST valve and accessories, 2 spare spokes Technologies: UST: The improved UST Road offers more speed, comfort and control in an easy-to-use tubeless system. Black Shield: Protects against scratches and dents so you can carry it hard through rock gardens and ski slopes. SUP Welding Technology - Uses a special heat welding technique to mechanically join two separate pieces of PVC into a single solid unit. Heat-welded PVC creates a mechanical bond that is stronger, lasts longer, and is better for the environment. Fore - Secures the spokes to the rim without drilling the top of the rim, so no tape is required.