Cone wrench

They should be used only for making adjustments to cones or for other low torque applications such as centering brakes.

Using a cone wrench in high torque applications such as loosening outer axle nuts may easily damage the wrench.

Cone wrenches are typically about 2 mm thick, compared to approximately 7 mm for a standard open-ended wrench.

Cone wrenches are commonly sized between 13mm and 28mm.

Most sizes 19mm and above are used for specialty applications such as BMX and internally geared hubs.