Irwin Tools 332020 5 x 5 Tamping Plate Drill bit tamping plate with sds-max shank For compacting soil and gravel Fully heat-treated for strength and long life Forged from superior-grade steel, the working points of our chisels can be re-sharpened for longevity Tamping plate works fast and efficient to tamp down materials and compact them quickly Drill bit tamping plate with SDS-max shank Forged from superior-grade steel, working points of our chisels can be re-sharpened for longevity Fully heat-treated for strength and long life For compacting soil and gravel Tamping plate works fast and efficient to tamp down materials and compact them quickly