Universal Tool Carbide Insert Chisels for UT9922 Chisel Scaler. Universal Tool UT9922 Straight Recoilless Chisel Scalers feature only 2 m/s2 vibration levels to reduce operator fatigue and a rugged all steel construction for added reliability.Universal Tool Straight Recoilless Chisel Scalers also feature a compact design for increased access and comfort and 3 sizes of carbide chisels available. Universal Tool Straight Recoilless Chisel Scalers are best suited for removal of scale, weld spatter and other residues in shipyards, foundry and fabrication shops.