Shimano DISC-BP Oil Funnel Tool with Stopper for use with One-Way-Bleed

You don't have a choice if you have Shimano brakes other than to buy a Shimano funnel. Be very careful not to cross thread the tiny threads on the bottom of the funnel. You also need a syringe, the Shimano Mineral Oil brake fluid, and a bleed block (which you can easily make out of Oak or Maple). BIG hint for brake bleeding! Get EVERY LAST tiny bubble out of the system or your brakes will be spongy. We watched at least a half dozen videos on this, the PARK TOOLS videos are better than others. The PARK TOOLS guys show all the little tricks to get every last little tiny bubble out. Money saving tip. Cut a piece of Oak or Maple 10mm thick to use as a bleed block; works perfect.