The outer width of both ends of the CNW-2 are nominally 12mm wide
One end has a two outer tips nominally 2.7mm wide each, and the other end has tips of 3.8mm each
The blade thickness is nominally 1.35mm
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.