1" x 12" Flat Chisel, Spline or 3/4" hex - 21/32" round. Manufactured using state-of-the-art technology, CNC machined and forged from industrial-grade alloy material for increased durability. Shot peened for added strength and increased surface hardness. Clear-coat engineered to prevent corrosion. Used for breaking concrete off or away from main sections. For use with spline or 3/4" hex - 21/32" round shank hammers.