Radial 16mm brake master cylinder from Hel.  Forged aluminium body and lever in black, complete with reservoir, brackets, lever and brake light switch.  Hel has been making high quality brake system components in Britain since 1993 and has gained a reputation for producing highly functional items with a pleasing finish.  The products are well supported here in the UK with ready availability of spares like levers, reservoirs and mounting kits in case of mishap, and overhaul kits to keep your pump working perfectly for many years to come.