This bracket solves two problems with the Xtracycle Freeradical at once: First: the wooden deck isn't long enough to prevent spray from the rear wheel from landing on goods which are being transported on the back of the bike. Second: There's no good place to mount a rear light on the Xtracycle. The bracket provides 50 mm and 80 mm wide hole spacing, which can accommodate a wide range of permanently mounted battery and dynamo powered rack mounted rear lights. The lip at the bottom of the bracket prevents spray from contaminating the light itself. We sell bicycle components online. All our shipments begin their journey by Xtracycle.