Shim-Mask sleeve of 3 identical pieces Shim-Mask is a stainless steel masking shim just 50 microns thick which is placed over an imperfection in paint or clearcoat or over a paint filled stone chip or scratch. A blade and/or abrasive is passes across the stencil body to remove the high spot but leave the surrounding area protected. Ideal for painters, SMART repairers, detailers or DIY painters and decorators. Demo video: YT /watch?v=ZuG5Tn8poP0