Soft Bond (Blue)– The metallic powder in the sintered segment wears away quickly
releasing dull diamond crystals exposing new abrasive crystals to
cut efficiently. Best used on hard surfaces.
Medium Bond (Red)– A metal bond strength right between that of soft and hard bonds.
Hard Bond (Black)– The bond of the metallic powder in the segment wears away slowly
and prevents premature wear against soft, abrasive surfaces.