Choosing the Right Buff & Blend Material Each of the Standard Abrasives Buff & Blend materials offers unique benefits. Standard Abrasives Buff & Blend materials include: GP, AP, HS and HS-F. GP is a general purpose material that delivers a high cut rate and consistent finish. It is the most middle-of-the-road, multi-purpose material among all the standard abrasives buff & blend materials. It's great for general-duty applications, like intermediate cleaning, blending, deburring and finishing - striking a balance between aggressive cutting action and fine finishing. AP material is a cut above GP in terms of its aggressiveness, and it will produce a coarser finish than GP material. HS and HS-F material are both high strength. The material is very tear resistant, so it's a good match for final finishing on irregularly-shaped parts, because it will not break down or fray when it comes in contact with contours and extrusions. HS-F material is the best material for light deburring and finishing, because the fineness of the mineral produces a consistent, soft scratch pattern when sanding brass, steel, bronze and stainless steel surfaces. Standard Abrasives™ Aluminum Oxide Buff and Blend Rolls come in varying widths, from 1 inch to 38 inches. We purposefully designed these roles in different sizes, so they would fit with a range of sanding tools. Whether the workpiece is large or small, it's likely one of these widths will be a good match for the size of the workpiece. These materials may be used on orbital or straight-line sanders to produce matte and satin finishes or may be cut and shaped for hand-sanding applications. The Many Benefits of Open Web Abrasives Every Standard Abrasives™ Aluminum Oxide Buff and Blend Roll features nonwoven nylon strands and aluminum oxide mineral mixed with resin. Gaps between the nylon fibers allow unwanted swarf to escape, enhancing load resistance. As the abrasive is less likely to clog with debris, the mineral keeps cutting sharper, longer. Wear and tear from excess buildup is reduced. Consequently, abrasive service life increases. The open web material is also waterproof and may be used with lubricants, which help to keep the abrasive running cool and wash away swarf. The load-resistant properties of the web, combined with the swarf-cleaning action of the lubricant, help to prevent workpiece contamination. As debris clears away, the likelihood of particles smearing or blemishing the substrate decreases. Rolls may be used on a variety of substrates: ferrous and non-ferrous metals, aluminum, high nickel /chrome alloys and stainless steel. This abrasive is designed to help you tackle your industrial application with efficiency and ease.