Material:Compound plastic mixing
Size:The length, width and height are about 9*5.5*15.5cm (adjustable), the error is about 1cm
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.
A simple but must have tool when changing those hard to mount low profile, and run-flat tires.