The DToplights are the largest range - all based around the same shell with a large reflector and very bright red LEDs. They are all designed to bolt onto the plate on the back of a carrier - various adaptors allow you to fit them elsewhere (see Extras).

Busch & Muller also make some other rear lights for attaching to your mudguards, and more basic lights with bulbs. The mudguard-mounting lights can also be attached to the seatstay or cantilever boss with the right bracket - see the Extras page.