Fast and Fine Finishing3M™ Flexible Diamond Film Disc 6011J is designed to help you get the best finishes on a wide range of hard-to-grind materials without sacrificing cut rates. The primary difference between each diamond abrasive product is the abrasive backing or attachment. Choosing the right backing depends on operator preferences and the application.3M™ Flexible Diamond Film Disc 6011J is built on a strong but flexible 5 mil film backing. The flexibility of the film backing enables this diamond abrasive to move forgivingly over the workpiece, evenly working over edges and around contours. Premium, micron-graded diamonds are securely anchored to the backing in an open dot pattern with a metal bond. Metal bonds are known to be some of the toughest, most durable binding agents when it comes to adhering mineral to a backing, enhancing overall durability of the abrasive.Three Unique Patterns3M™ Flexible Diamond Film Disc 6011J comes in three patterns: 18, B2 and 21, which each have their own advantages. 18 is a small-dot pattern, designed for fine finishes, and it provides the fastest stock removal on very hard materials such as thermal spray coatings and ceramics. B2 is a medium-dot pattern designed for aggressive cutting action and has improved coolant flow thanks to the spacing of the dots. 21 is the largest dot pattern and it's ideal for applications where loading is a problem, since the bigger gaps allow more swarf and debris to escape.Overall, the open dot pattern – whether spaced out or condensed – helps produce aggressive cutting action while reducing loading. Given its dual strength and flexibility, the 3M™ Flexible Diamond Film Disc 6011J is a great abrasive for your hard metal finishing needs — from grinding to finishing.