The EX-1 Disc Rack is one of Blackburn's strongest racks. Sometimes these new-fangled disc brakes get in the way of accessory installation and this product was designed to make sure that isn't an issue. This rear rack is crafted aluminum tubing, stainless-steel hardware, and additional oversize reinforcing struts for uncompromising strength and durability. It fits most PUBLIC bikes, but we recommend utilizing this rack with the PUBLIC R18 Disc models. Specs Mounting system works with disc brake frames and bikes lacking rear dropout rack mounts Lower mounting points attach to included extra-long QR skewer Three strut design for maximum load control Fits both wide and narrow tire Fits 26" and 700c frames 40lbs/18.2kg carrying capacity Compatibility: Fits 26” 650b/27.5”, 700c and 29” wheels