Feedback Sports Omnium Trainer Thru Axle Adapter Description: Feedback Sports Omnium Trainer Thru Axle Adapters enable users of the Omnium Trainer to install bicycles featuring 15 x 110mm or a 15 x 100mm thru-axle safely and securely within their trainer. Features: Replacement 15 x 100/110mm thru axle end caps for Omnium Trainer Rubber O-rings help keep adapters firmly seated Specifications: Color: Black Material: Alloy Compatibilty: Feedback Sports Omnium Trainer