A roller is connected to a harvesting platform for movement with a combineover a groundsurface in a direction of travel. The roller includes a first portion defininga first diameter andincluding a first material, and a second portion defining a second diameterand including asecond material. The second diameter is greater than the first diameter. Thesecond portionsubstantially surrounds the first portion, the second material has differentmaterial propertiesthan the first material. The roller extends in the direction of travel androtates about a secondaxis which extends generally parallel to the direction of travel.
