The Babysitter Rack F/disc 26" Wheel 2.0 by Topeak is a tubular aluminum rack that is compatible with disc brakes. It allows for fast and easy mounting of the BabySeat II without the need for tools. The rack also features the MTX QuickTrack plate, which is compatible with any Topeak MTX TrunkBag, MTX rear basket, and MTX 2.0 TrunkBag.The Babysitter Rack F/disc 26" Wheel 2.0 attaches using a braze-on type attachment. It is made from 6061 T-6 hollow aluminum, ensuring durability and strength. The rack is compatible with both the MTX QuickTrack and MTX 2.0 QuickTrack systems, as well as MTX TrunkBags, MTX rear baskets, and MTX 2.0 TrunkBags.With a maximum weight capacity of 27 kg or 60 lb, the rack meets the standards of EN 14872 and ISO 11243. It also comes with additional features such as a mounting bracket measuring 26.5 cm, a solid fender top, and mounts for the RedLite and Tail Light.