The SDS plus Flat Chisel provides less jamming and more progress in concrete than standard flat chisels. The self-sharpening power ribs create not only lateral, but also vertical cracks in the material. This provides a higher material removal rate and prevents the chisel from getting stuck. Additionally, viper teeth on the chiselling edge offer increased work progress. The chisel is intended for use in concrete and brick for completing adjustment work to destroy or remove walls, restore joints and clear reinforcements. The SDS plus Flat Chisel offers a 30%-longer lifetime and a 15%-higher material removal rate than standard chisels.