Individual swappable tamp heads for use with the SweetSpot Tamp System . The pounds-per-square-inch pressure increases as the plate size gets smaller. To get the most out of your tamp, select from 10 x 10, 8 x 8, 6 x 6, or 4 x 6 sizes. Handle sold separately or included as part of the complete SweetSpot Tamp System.