evo.com | Park Tool Wrenches > Struggling to get that chainring installed? The Park Tool CNW-2 Chainring Nut Wrench is the perfect piece of equipment to get 'er done easily. Blade Thickness is Nominally 1.35mm Double-Ended to Fit Most Slotted-Type Nuts The Outer Width of Both Ends Are Nominally 12mm Wide One End Has Two Outer Tips Nominally 2.7mm Wide Each, the Other End Has Tips of 3.8mm Each | Park Tool CNW-2 Chainring Nut Wrench 2024 in Silver