►【Package】3 colors/10 pieces, gold, silver, gun black colors, a total of 30 sets. ►【Size】 Outer diameter: 28mm Inner diameter: 20mm Thickness: 3.6mm ►【Material】 Our spring o rings are made of high quality zinc alloy products are not easy to rust and have good corrosion resistance. ►【Easy to use】 These key ring clips built-in spring snap hooks, buttons are easy to assemble and disassemble, with smooth one handed operation. The integrated spring clip controls the rebound force well and is not easily deformed. ►【Widely used】 Keychains, belt buckles, jewelry buckles, hook clips, wallet buckles, handbag buckles, dog traction loop buckles. Product Description 1.The spring buckles are suitable for can be applied to anywhere you want as hang crafts or decorations,making it become popular DIY accessories. 2.The alloy O-ring Spring clip design, easy to open and close, quick release. making project operations very simple, quickly connecting and releasing Specifications: Material: Zinc alloy Colors: Gold, Silver, Gun Black Size: Outer diameter: 28mm Inner diameter: 20mm Thickness: 3.6mm Quantity: 30 Package includes: 30Pcs X Spring O Rings Round Carabiner Keyring