Are you looking for o-ring buckles? This set is a good choice. This is a set of clasps with round shape, great for you. This set of o-ring buckles is a great choice for many kinds of DIY projects and key rings making. They are a set of good you or your friends who like DIY. Features -Color:Golden -Material:Alloy -Size(1):2.00X2.00X0.20cm/0.79X0.79X0.08in -Size(2):3.00X3.00X0.22cm/1.18X1.18X0.09in -Size(3):4.00X4.00X0.30cm/1.57X1.57X0.12in -Size(4):5.00X5.00X0.30cm/1.97X1.97X0.12in - The corners of the product are done polish treatment, so that round smooth buckles do not hurt hands, safe and reliable. - Multifunctional Hooks are stable quality and , performance. - Heavy Duty O-Ring is a convenient accessory for home or office use. - Surface adopts treatment, high temperature resistance, impact resistance, no rust, etc - Also great for DIY projects, crafting, jewelry design or making lanyards. Package list: Rings