Sds Plus Flat Chisel Is Ideal For Various Concrete Demolition Applications With Less Seizing And More Progression Knock-Out Teeth On The Chisel Side Offer Increased Work Progress The Sds Plus Flat Chisel Offers A 30% Longer Life And A 15% Higher Material Removal Rate Than Standard Chisels. The Chisel Is Compatible With An Sds Plus Chisel Attachment Or Can Be Used Directly With Sds Plus Hammers With A Rotation Stop.