Petersons Praxis Edge Trimmer Replacement Pad | Pet402094. 100mm / 4" Petersons Praxis Edge Trimmer Replacement Pad | Pet402094 The Petersons Praxis Replacment Pad for the Edge Trimmer tool is an innovative tool to help the ters achieve a professional finish. It gives you a precise smooth finish when ting walls, wall-to-wall and ceiling junctions. It has a plastic guide wheel that follows contour of adjoining surface for easy cutting-in. Very simple and easy to use, this edge trimmer tool has a flocked pad compatible for both water-based and oil-based t type. A replacement pad is available for purchase. Petersons products are expertly crafted with the highest quality materials, guaranteeing perfection and satisfaction in every application.