Chris, the 6' dimension is the width of the disc. Angle or box often refers to the construction (either angle iron frame or box frame with box being heavier duty). Almost all discs for our size tractors will have two rows of discs but each row is two gangs (side-by-side) for four gangs total. Each gang may have from 5-7 disc blades. Check <A target="_blank" HREF=http://www.kingkutter.com/index.asp>King Kutter</A> and other manufacturers for some pictures /w3tcompact/icons/smile.gif