Fidlock TWIST Deluxe Water Bottle Cage Set - Universal Base Mount Strap On 450ml Smoke. The Fidlock TWIST Deluxe includes the Universal Base for mounting to bikes without standard braze ons. The Fidlock bottle is guided into place and snaps securely on the mount. The bottle is held with a combination magnetic/mechanical retention system that releases with a simple twist of the bottle. The compact 450ml bottle fits in the tightest spaces of small or full-suspension frames. The Deluxe bottle features a high flow valve that is self-sealing and leakproof with a removable dirt cover so the mouthpiece stays clean out on the trail.