Double-Ended Cone Wrench

Standard wrenches are too thick to fit into the narrow gaps of bicycle hub bearing assemblies. Cone wrenches are machined with a much thinner profile, allowing them to slide into these tight spaces to adjust cone flats and locknuts without damaging the components.

Yes, in most cases. Adjusting a hub requires one wrench to hold the cone in place while the second wrench tightens the locknut against it. Unless you already own a second wrench of the exact same size, you will need a pair to complete the job.

You will need to measure the width of the cone flats on your specific hub using a caliper or a metric ruler. Common sizes range from 13mm to 18mm, so it is best to verify your hub's specific requirements before purchasing.

While designed with the home mechanic in mind, these are made from durable, chrome-plated tool steel. They are built to withstand the torque required for regular bearing adjustments and will hold up well to consistent maintenance tasks.

These are specialized tools designed specifically for cone flats and adjusting nuts on bearing assemblies. While they might occasionally fit other small nuts on a bike, their thin profile makes them unsuitable for high-torque applications like pedals or crank bolts.