This rim is built specifically for the rigorous demand a unicycle puts on a rim. Its the same rim as the double walled eyeletted alloy rim used on the Nimbus 26" Mountain Unicycle.
Should you want to build the wheel, here is a link to the Spoke Calculator so you can find the correct spoke length you need.
Built wide and strong for fat tires and heavy abuse, these are the choice when strength is the most important factor.
Width Outside: 42mm
Width Inside: 32mm
Spoke Holes: 36
Material: High Quality 6061 heat treated aluminum with box section
Finish: Black anodized
Nipple Eyelets: Stainless Steel