a2z: Manufacturer of disc brake accessories such as brake pad, cable hanger, and light-weight hubset.Avid: Producer of disc brakes, rim brakes and various bicycle components. Provides product information, technical specifications, service information, and downloads. USA.Budbrake: Provides a device which automatically balances the braking force between front and rear wheels. USA.Clarks Cycle Systems: Manufacturer and distributor of cables, brake pads, and disc pads. UK.Sturmey Archer: Unique bicycle front and rear brake hubs in 3-speed, 5-speed, and 7-speed gears and Brooks cycle saddles.Winzip Enterprise Corporation: Manufacturer of bike and bicycle parts, including disc brake, disk brake, caliper, brake pad and brake shoe.