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Park Tool Chainring Nut Wrench


The CNW-2 makes chainring bolt set installation and removal easy. It securely holds the slotted nut to prevent spinning when tightening or loosening the bolt.

  1. Double-ended to fit most slotted-type nuts
  2. The outer width of both ends of the CNW-2 are nominally 12mm wide
  3. One end has a two outer tips nominally 2.7mm wide each, and the other end has tips of 3.8mm each
  4. The blade thickness is nominally 1.35mm
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