3M™ Resin Bond CBN Wheels and Tools, 1A1J, 7X1/2X1-1/4, X=1/4 B220 143BI - MMMRBBW50114

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Our 3M™ CBN Wheel 143BI wheels are used for grinding primary and secondary relief angles on cutting tools made of tool steel and high speed steel. This general purpose wheel offers a balance between cut rate and good form retention during grinding operations.