WTB KOM Tough TCS 29" Disc Rim. Features: Dual I-Beam construction increases strength and stiffness Extruded from AL 6069 for durability and reasonable weight Updated spoke bed provides a more congruent interface between nipple and rim TCS 2.0 rims deliver WTB's easiest to mount and most reliable tubeless system WTB Solid Strip and Flexible Rim Tape are required for tubeless setup Specs: Size Model: 29" i25 Tough Internal External: 25/29mm Holes: 32h ERD: 604mm Color: black Weight: 493g