Red LED TwistLit Light for Mobility Scooters Pride Armrests This is a heavy duty

This is a heavy duty wheel assembly

and it is a very common size used on many mobility scooter models

the knuckle may be considered as the tiller's knee joint

it can stay out of the way

Red LED TwistLit Light for Mobility Scooters Pride Armrests This is a heavy dutyTwistLit lights are well known in the industry for being highly visible and highly affordable safety lights for mobility products, including mobility scooters and power chairs. This red LED version is no exception to that rule. The light can be set to either Glow mode (a steady light) or Flash mode (the light flashes at intervals). Flexible rubber ties are used to hold the light securely to any tiller or post.