Pair 4g 5/8 White Acrylic Captive Bead Rings - Body Piercing Jewelry The product is a pair of 4g (5mm) white acrylic captive bead rings. These rings are suitable for any body area and are made of acrylic material. The diameter of the rings is 5/8 (16mm) and they come in a set of two. Perfect for those looking for a lightweight, durable, and stylish body piercing jewelry option.