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 One End Has Two Outer Tips Nominally 2.7mm Wide Each, the Other End Has Tips of 3.8mm Each Double-Ended to Fit Most Slotted-Type Nuts The Outer Width of Both Ends Are Nominally 12mm Wide | Park Tool CNW-2 Chainring Nut Wrench 2025 in Silver