This tire changer bead clamp is an useful tool for mounting and demounting tires, and it is a direct use tool for easy operation. In the meantime, this tool is as efficient as having another person prying down on the opposite side of the bead while you mount the tire on the tire changers mount head. Its a huge time saver and can prevent tire bead and wheel damage from over stress. Don't miss it. Features - Color: Black. - Material: Plastic - Size: 17x8.4x6cm - This tire drop center tool is for use with make of tire changer. - The plunger on this tool is spring loaded so once installed will stay in place while mounting the tire, and you can adjust it with hands by little efforts. - This bead depressor pushes the bead down into the center of the wheel which helps mounting and demounting tires especially done well with low profile side walls and run flats. - Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand