The Oxford Products Rear Brake Fluid Reservoir has a universal fit and is made from durable surface anodised billet aluminium with an EDPM expansion seal and stainless steel fixings. It features a waterproof seal, ergonomic knurled cap, and 21ml volume, and is recommended for use on the rear brake reservoir. It measures 42mm x 37mm and fits an 8mm hose. It comes with a stainless steel fitting bracket.