Merrimac also offers an extremely noncorrosive and wear resistant hard surface coating called Merriloy. Merriloy is specifically designed for bores or inside diameters. For the past eight years, Merrimac has used this hard surfacing on its products, making our products superior to the competition. Since we have had such great results with Merriloy, we are now offering this hard surface coating as its own product. If you are looking to extend the life of your parts and need an I.D. surface that is extremely non-corrosive, and excellent against abrasion, galling and impact; Merriloy could very well be your answer.