Exact Pitch, Bright Surface, Environment Friendly Double Loop Wire also called twin loop wire, well coated and finished with nylon, bright surface, consistent quality, environment friendly, certified by SGS Testing, REACH Testing, PONY Testing, the ideal binding material of spiral notebooks, notepad, calendars ect., Size Available: from 1/4” up to 1-1/4” Packaging Available: in spool / in box / ...