14mm (9/16") piston

SPL Rating: 104dB at 1kHz

Also fits H-D with National Cycle Beaded Heavy Duty

Fits on top of centerpart

5-pack Hex Bolt Zinc 5/16-18 by Gardner Westcott

wera ratcheting wrench set joker open box end 6 pcs set metric 3OM 14mm (9/16") pistonMetric. 6 piece set. Including 6 wrenches with an open end on one side and a ratcheting box end on the other side, with identical sizes on both ends. The other 2 are open end wrenches on both ends. Packed in a robust textile pouch. Color coded for size. When everything fails, it's time to play your Joker. Open end: The Joker has a non angled 12 point beak, therefore it equires just 30 of working space, otherwise it functions just like a regular open