Superior Steel SC92167L 1-1/4" Hex Shank Asphalt Cutter 6-1/2" x 4-3/4" 18" Long. Designed for use with pneumatic jack hammers.Digs clay, hard-packed gravel and dirt Fully hardened steel body avoids breakage and delivers increases life and durability. Hardened steel design stands up to the toughest daily use. For light chipping and chiseling of tile, mortar, glazing compounds, and other masonry products. Used with large 60 lbs and 90 lbs pneumatic paving breaker.