These 36" dollies are designed for moving and unrolling heavy rolls of vinyl on the jobsite up to 16" in diameter. Each of the three 36" long heavy gauge tubular steel rollers is mounted on double ball bearings to form a rolling bed for the material. Simply pull on the sheet, and the material feeds off the roll. The dolly has four non-marking rubber wheels mounted on the sturdy cast aluminum end frames which permit the dolly to be easily moved even when loaded.