Park Tool BBT-69.4 Central Wrench

Professional-quality Park Tool central tool, e.g. Shimano HT2 and SRAM GXP for hubs. It also fits some of the locking rings of Centerlock brake discs, and thanks to the deep central part of the tool, there is no need to remove the end bushings of the hub. Used with a 3/8" screwdriver. Compatible with Park Tool's BBT-RS tool (sold separately), which allows the key to stay securely in the bearing cup without slipping.

• 16-step key, diameter 44 mm (from the inside of the steps 42.7 mm)
  
• CNC machined aluminum
  
• Compatibility with e.g. several Shimano HT2, SRAM/Truvativ GXP, Campagnolo, Chris King, FSA MegaExo and Race Face threaded hubs
• Multiple Centerlock locking rings with 16-tooth external gearing
• 16-step lock rings for Bafang BBSH, BBS02, etc. mid-engines
  
• Used with a 3/8" screwdriver
• An updated, deeper version of the BBT-69.3 tool