Superior Steel SC92169M 6" x 4-1/4" Square Clay Spade 1-1/8" Reduced Hex Shank 21" Long. Designed for use with 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 clay and hard soil.