This is a thin monoblock goodman handle to be used with a Light Monkey 32 Watt Variable Focus (or any other model that is physically identical). The thin design allow you to grab your scooter handle easily and also have a thumb loop to switch hand in case of need. The clearance for your hand is 40mm. Designed for thick drysuit gloves (won't be great with bare hands). The bottom of the handle could have been made even thinner but it works ok for me that way. Reduce the thickness if you prefer.