cumi ansi b7 1 тээрэмдэх чулуу. cumi ansi b7 1 grinding stone. Sait 4-1/2" Disc Grinding & Cut-Off Wheels Sait 4-1/2" Disc Grinding & Cut-Off Wheels. thin Type 27 shape can be used on all angle grinders in accordance with ANSI B7.1. Special aluminum oxide formulation offers the fastest cutting, longest lasting thin