12 Size 2/0 Swiss Pike Saw Blades For Ring Sizing & Jewelry Repair. This is a new set of 12 Pike saw blades. These are made in Switzerland and are the finest jewelers saw blades available. They are manufactured to exacting tolerances for angle, size and cut for each tooth. These are for cutting all metals and other hard materials. These saw blades are size 2/0. These have uniformly set teeth to reduce binding and breakage. The rounded back makes cutting curves easier. Each measures approximately 5 1/4" (133 mm) long.