10mm Glue-In Channel Cuff Bracelet is a pre-formed blank cuff with a hollow recessed channel to allow you to glue in a leather strap. The channel is designed to allow for a 10mm leather strap or similar material. This cuff is plated brass and is free of lead, nickel, cadmium and hypoallergenic. There is a drill hole at the back of one end to allow for a jump ring so you can attach a charm. This bracelet is fairly stiff at approx 15 gauge. We found the easiest way to put it on is to roll it over from the outside of your wrist - rather than trying to push in straight on. Once you've done it a few times, you will find it goes on easily. This bracelet can fit comfortably up to a 7 inch wrist. This bracelet can be opened a bit for larger wrists by carefully pulling the ends apart. Item Specs: Plated Brass Cast in China / Plated in EU Lead Free, Nickel Free, Cadmium Free Bracelet Width (Side to Side ID): 63mm Channel Width (ID): 11.2mm Channel Length (ID): 160mm Channel Depth: 2mm Gauge: Approx 15 AWG Weight: 17.5 grams