These are Ofna Medium Foam Donuts for 40 Series Wheels and Tires. FEATURES: Yellow in Color Soft Foam Material INCLUDES: (2) Foam Donuts REQUIRES: Installation Order DTXR2000, DTXR2002 if Tire Glue is needed SPECS: Outside Diameter: 5.35" (136mm) Inside Diameter: 3.6" (92mm) Width: 3.4" (86mm) EEW 11/02/06 ir/jxs