3M™ Cubitron™ II Flap Disc 967A is ideal for applications on flat surfaces or outside edgework, especially in paint prep and stainless steel fabrication where final finish and gouge resistance are important. 3M™ Cubitron™ II 967A Flap Disc capitalizes on our proprietary 3M Precision Shaped Ceramic Grain technology to deliver superior cut rates, while the flexibility of the flap construction enables grinding and blending in a single step. Because our 3M Precision Shaped Ceramic Grain generates an exceptionally high cut-rate with less pressure, operators can finish tough tasks like weld grinding, deburring, rust removal, edge grinding, weld seam blending and deburring faster with less fatigue. A heat-activated grinding aid on the disc helps keep the disc cooler on stainless steel and other heat-sensitive metals such as nickel alloys and titanium, thereby reducing metal discolouration/oxidation and the chance of heat-related stress cracks. The superior performance and durability of 3M Precision Shaped Ceramic Grain is enhanced by a uniquely designed heavy Y-weight poly-cotton backing that enables controlled, even wear with no premature dulling or glazing, so operators can accomplish more throughput per disc. For Quick Change, 11.43 cm flap discs with a center hole require a flap disc adapter nut and 17.78 cm discs require a flap disc holder (both sold separately). Discs with a 11.43 cm diameter have a max RPM of 13,300 and 17.78 cm discs have a max RPM of 8,600. Use Type 27 on flat surfaces or outside edgework. 3M™ Cubitron™ II Brand Products have raised the bar for high-performing abrasives. 3M Precision Shaped Ceramic Grain out cuts and outlasts conventional ceramic industrial abrasives and requires less grinding force to achieve superior performance.