We are offering double loop wire forming machine obfc700 features:twin ring wire forming machine producing all range diameters and sizes wire o with different pitches forming by nylon coated wire. A metal wire coated with high quality nylon with wide variety of color and size. The wire is firstly formed to uuu shape, and then the wire formed to an open loop c shape. When binding the books, the loop will close into a perfect o ring.1. can and easier change forming tool by modular forming tool;2. with imported machine material, accessories and parts;3. stronger structure, more stable working ability.