Materia:The swivel clasps is made of 304 stainless steel.Strong and durable, not easy to rust or deform.Aesthetically pleasing and comfortable to wear.The surface is bright and shiny, and it is not easy to fade. Free Swive:These key chain clip hooks can be rotated 360 degrees easily and freely, with flexibility, you can rotate it any way you want, easy to use. Can be used for most everyday items. Size and Quality:Inside the package is 2 swivel snap hooksabout 36mm long,6mm thick,14mm width,inner diameter:15x8mm,hole:8x7mm.You can choose from as you please,and these boxes are also suitable for storing your goods. Wide application: Ideal for DIY projects such as key chains, backpack, handbag, purse, wallet clasps, pendants, earrings, sweater chains, anklets, mobile phone decoration accessories, key chains, etc. Easy to use:The swivel snap hook allows for strong and quick attachment to any accessory,bag,pendant,rope,cable,chain,key chains,or dog leashes,sports equipment,marine hardware,as well as outdoor activities.