Industry Nine's 101 Classic IS Disc Hubs are made to be one of the most versatile and reliable -- while one of the most affordable hubs on their lineup. Features: dual phased-pawl drive mechanism which gives 90 points of engagement and 4 degree engagement by way of a six pawl driver and 45 tooth drive ring High-load sealed cartridge bearings Classic j-bend spokes Robust protection system using a labyrinth radial lip seal and endcap proximity seals unencumbered by bearing wear or preload CNC machined, anodized and assembled entirely in Asheville, NC Service-friendly retained pawls actuated by durable leaf-springs Unified service parts across the range Specifications: Position: Rear Brake Type: Disc Brake (6-Bolt) Axle Type: Thru Axle Hub Spacing: 12 x 148mm (Boost) Drive Type (Rear Hub): Shimano/SRAM or SRAM XD Spoke Count: 32H Spoke Type: J-Bend Left Side Flange Diameter: 58mm Right Side Flange Diameter: 60mm Left Side Center to Flange: 37mm Right Side Center to Flange: 23mm Bearing Type: Sealed Cartridge Color: Black Weight: 295g