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24 Piece 1/4" Wide by 6 " Long includes 4 color coded sticks and 5 belts each in 220 (60 Micron),270 (50 Micron),320 (40 Micron) and 400 (30 Micron) grits New 3M Micro-Finish Film is a fast cutting abrasive for precise, uniform, close-tolerance finish High strength polyester film backing and micron-graded aluminum oxide mineral resin is bonded for durability. The particles are electro- statically charged so all particle points are going in the same direction. This process increases the precision of the belt
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3M Precision-Shaped Grain continuously fractures into sharp points that cut exceptionally fast, helping increase productivity Engineered to run cooler, reducing metal discoloration/oxidation and the chance of heat related stress cracks Reduces changeouts and downtime in robotic and pressure-assisted applications