The Problem Solvers Seatpost Clamp with Rack Mounts is an ingenious adapter that gives you a super-secure and clean way to mount a rear rack on your bicycle. This light and durable aluminum piece simply takes the place of your seat tube collar. It includes a stainless-steel binder bolt and 2 5mm screws for rack attachment.
Electra's Seatpost Clamp w/Rack Mounts is the crucial link between your bike and your rear rack. It replaces the standard seatpost clamp to allow rack installation on bikes not originally fitted with rack eyelets.