These replacement chain tool pins are compatible with most Park Tool chain tools and are made from hardened alloy tool steel. Installs with a 7 mm or 9/32" box end wrench.
Park Tool introduced the bicycle world to the three-way hex wrench over 40 years ago. Our Y-shaped wrenches fit perfectly in the palm of your hand and provide excellent leverage, making them a favorite of mechanics in bike shops worldwide.
With the increasing number of lightweight components and torque specifications found on bicycles, a good torque wrench is a necessity for every mechanic.
