CRAFTMEMORE 2pcs 2 Inches Inner O Ring Spring Opening Snap Trigger Clip Buckle Charm Purse Making SCOS (Gold) is the perfect choice for your DIY craft projects. Made of zinc alloy metal with rust-preventive coating, these O-rings are high strength and highly resistant to corrosion. With an inside diameter of 2 inches (50 mm) and an outside diameter of 2-1/2" (64 mm), these spring-opening O rings are perfect for key rings, purse loops, handbags and more. Get the perfect metal craft accessories for your creations with CRAFTMEMORE on Amazon!