Furius II V21iM Bike & Scooter Helmet Size:Large/X-Large and measures 22-13/16" (580 mm)

and measures 22-13/16" (580 mm) in length

You can see the list of power chair models that use this caster wheel when you click on the Compatibility tab

but not too bad

and Monster Scooter Parts is delighted to carry them

and superb drive performance are most important

Furius II V21iM Bike & Scooter Helmet Size:Large/X-Large and measures 22-13/16" (580 mm)Are you looking for a strong and lightweight helmet? The Airius Furius II V21iM bike & scooter helmet is the happy pairing of form and function; a superb cradle of protection for your head without feeling like you're wearing a steel pot. Monster Scooter Parts offers this fine head protector in your choice of colors. In addition, Airius's Furius II helmet is available in two sizes to fit the widest range of heads. You can select the youth sized Small