Packing: 6pcs Material: alloy Colour: seven colours Size: length 17mm(0.67inch), width 11.5mm(0.45inch), inner diameter 7.5mm(0.29inch) Sturdy, anti-corrosion, durable, not easy to fade, long service life. Fashionable appearance, simple and elegant, laser plating process, rich colour levels, add personality compared with pure colour metal jewellery. How to use: unscrew the screws from the back with a screwdriver (not included), place the side holes in the holes inside the bag, then place the side of the side holes on the outside of the bag, then insert the screws from the inside into the holes of the bag and tighten them. Wallet side buckle with O-ring is suitable for attaching leather crafts such as wallets, purses, leather bags, leather shoulder bags and leather crossbody bags. It can also be used in leather boots and jeans to add a sense of fashion. Attention: Please make sure the inner diameter of the ring can be attached to the chain before purchase.