The 3M™ Flexible Diamond PSA Cloth Disc 6008J was designed to tackle hard-to-grind materials like stone, glass, ceramic, metal, carbide, and composites. The diamond mineral and durable backing make this abrasive a good match for grinding and finishing on hard materials.The 3M Flexible Diamond PSA Cloth Disc 6008J is designed to help you achieve improved finishes on a wide range of hard-to-grind materials without sacrificing cut rates. A metal bond securely anchors micron-graded diamonds to a premium flexible backing in an open dot pattern. This provides durability and long life, while allowing conformance to a variety of contours. In addition, the open dot pattern produces aggressive cutting action while reducing loading. The 3M Flexible Diamond PSA Cloth Disc 6008J is used on a variety of hard-to-grind materials for finishing, polishing, grinding, and stock removal. This diamond abrasive has a pressure-sensitive adhesive (PSA) to make for easy abrasive to tool attachment. The PSA backing works much like a sticker, whereby operators can stick the disc to the tool by applying light pressure, and this tool attachment helps enhance productivity and thoroughput. The 3M Flexible Diamond PSA Cloth Disc 6008J comes in three patterns: 18, B2, and 21. Here's how to distinguish between the three. P18 is a small-dot pattern, designed for fine finishes. B2 is a medium-dot pattern designed for aggressive cutting action and has improved coolant flow, given the spacing of the dots. 21 is the largest dot pattern and it's ideal for applications where loading is a problem; gaps allow swarf and debris to escape. Given its dual strength and flexibility, the 3M Flexible Diamond PSA Cloth Disc 6008J is a great abrasive for your metalworking needs from grinding to finishing.