MINI Factory OEM replacement Emergency Brake or Parking Brake Handle in Black.  If you've had the tip of the brake handle break off, this is the replacement handle - the tip is not available separately, so you need to order the entire handle assembly.

Fits the following models:

2007-2013 R56 MINI Cooper and Cooper S Hardtop
2008-2014 R55 MINI Cooper and Cooper S Clubman
2009-2015 R57 MINI Cooper and Cooper S Convertible 
2012-2015 R58 MINI Cooper and Cooper S Coupe
2012-2015 R59 MINI Cooper and Cooper S Roadster

If you prefer chrome, see OEM Emergency Handbrake Parking Brake Chrome Handle for MINI Cooper Cooper S R50-R59 Gen1 Gen2.