Easy to use: PVC strap (2 3/4") is easy to open or close, Just use the metal clip (1" x 3/8") to clip what ever you want.Stable and durable: Tight spring, durable PVC strap, and a stable button disc make the clips can be used for years.Wide Compatibility: Universal clip for all ID cards and badge holders. Our new upgraded clips used by trade show credential name tags, Schools or other events requiring badges or IDsHigh quality & Environmentally friendly: Upgraded metal and PVC materials. The metal will not rust. PVC material is non-toxic, tasteless and environmentally friendly. Safe to use.Package includes 50pcs badge clips, together with One year friendly, Easy-to-reach support.