Guinevere Scuff & Buff Balls range from 60 to 800 grit. Our Power Carving Instructor, Maverick Jaillet, carved a cherry cup and sanded it with the Guinevere to 320 grit. He switched to the grey Scuff & Buff 600 grit and WOW! It quickly gave the cup an extra highly polished, super smooth surface, ready for a protective coat of oil. Maverick then picked up another 60 grit grey S&B, this time specifically for applying food-safe oils or waxes. He then hand applied the oil and buffed the finish in the with the second grey S&B. The resulting friction heated the oil and the wood, creating a much deeper penetration of the finish. The end result exceeded our highest expectations.