WTB KOM Tough TCS 27.5" 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:27.5" i35 Tough Internal External:35/39mm Holes:32h ERD:565mm Color:black Weight:567g