Specifies the exact number of spokes you will use. It is essential that the number of holes in the hub matches exactly the number of holes in your rim in order for the wheel to be laced.

Specifies how the hub is mounted to the fork or frame. Select Quick Release (QR) if the axle is secured with a quick release lever, or Thru Axle (TA) if it uses a thicker, threaded axle (you should also know the dimensions, e.g., 12x142mm).

Select the mount required for your braking system. If you have rim brakes (V-Brake), choose the corresponding option (without disc mount). If you have disc brakes, select the mounting standard required by your disc: 6-Bolt (6 bolts) or Center Lock (center ring), as they are not compatible with each other.