Ibera Bike PakRak Clip-On Commuter Bag & Carrier Plus+ Rack (Disk Brake Mounts) Combo Set Frame-mounted for heavier top and side loads. For disk-brake equipped bikes. Fits most frames. Quick-Release clips on and releases within 3 seconds - no straps required! Integrated hand carrying strap and detachable padded shoulder strap are included for off-road use. Durable ABS base allows it to be set down on wet surfaces while protecting the cargo within.