Herkules "White Label" 5/0 Saw Blades For Ring Sizing & Jewelry Repair This is a new set of 144 Herkules "White Label" saw blades These are made in Germany and are the finest jewelers saw blades available Round backs make it easy to turn corners and follow curves These are for cutting metals, bone pearl and other hard materials These saw blades are size 5/0 Each measures approximately 5 1/8" (130 mm) long