This tool should be used as a guide only. Steelmaster 1200WF may not be an exact match for Interchar 1190 by but we have given the closest match we can. Steelmaster 1200WF should do the same job and have similar properties but you should always read the technical data sheets for both Steelmaster 1200WF and Interchar 1190 to be sure. Please see any notes to see any major differences and call us on 01285 862132 if you have any specific questions.