Buy all of the Fitches by Mack Brush here. Fitches special paint brushes used for rough and coarse surfaces. Fitches are also used for Lettering, Wall graphics and Pictorials or Bill Board. I use my fitches to also coat the edges of boards because they give the type of control I need to keep the paint from getting sloppy. Corrugated Rolling Walls? get an Angled Fitch which is cut at an angle to a sharp point to help make sharper spurs on large lettering and they roll in and out of that corrugated metal walls. Your a Fitch to Cut in your Outlines and then fill the letters in with a Cutter or a Roller to really speed up your lettering time with a Fitch. Other names for Fitches by Mack Brushes are angled Fitches, square Fitches, natural hair Fitches, hog hair Fiches, Boar hair Fitches, mack brush fitches and mack Fitches.