Universal clamp for mounting the Topeak tool bag Alien, the Ratchet Rocket tool case, as well as the smartphone drybag on handlebars, stems, seat posts, or frames. Additional features: - Suitable for Ø 22-44 mm tubes Scope of delivery: - 1 x Topeak Fixer 55 Universal Adapter Note: NOT compatible with the RideCases for iPhone 6 / 6 Plus, 6s / 6s Plus, 7 / 7 Plus, 8 / 8 Plus, X, Xs / Xs Max, XR, 11, 11 Pro / 11 Pro Max!