The Mini Slab Roller SRM-1624 features a TWO-ROLLER system with easy locking roller levers and thickness indicator that provides synchronized fine adjustments. The SRM-1624 can produce a slab with the thickness of 0-1″. Its lightweight (31 lbs), compact design makes it PORTABLE and quick to disassemble for storage; and yet its 16″ X 24″ table makes it a permanent addition to any studio or classroom.