Milwaukee 48-62-4252 SDS-MAX SLEDGE 1” x 16” Flat Chisel Our Milwaukee 48-62-4252 SDS-MAX SLEDGE 1” x 16” Flat Chisel stays sharper longer. Reinforced edges deliver maximum durability and reduced wear over the life of the chisel. Weve engineered our chisels to maintain sharper edges for increased productivity and maximum life. No re-sharpening or re-hardening is necessary, reducing downtime. Our MILWAUKEE® SDS Max SLEDGE™ Chisels are designed for SDS Max rotary hammers with high-grade forged steel for maximum durability and longer life in concrete demolition over our standard chisels.