It&';s Simple. It&';s Effective. It&';s your Bead Bro. Holds the bead down in the rim channel, allowing you to use both hands to complete the remainder tire installation. It&';s like having a third hand. Locks bead to the rim using a rubber bumper. Won&';t scratch or damage your rim. Fits rims up to 40mm wide. Select from multiple spoke holder channels for a perfect fit on your rim. Compatible with carbon and alloy wheels.