Evolution R255TBL zero clearance insert. This 3D printed blade insert allows you to make precision cuts and massively reduce tear out on your workpiece. Perfect for cutting thin material without the risk of it falling between the blade and the guard. Fitting Lower your blade below the level of the table. Secure the insert into position using the included latch Simply raise your saw blade through the insert to create a “kerf” which precisely matches the blade on your saw. Remove insert and remove any burrs using a knife or chisel.