Material: High Quality S925 Solid Sterling Silver (Stamped) .Hypoallergenic, Nickel Free Chain. Barrel Snap Clasp Easily Open and Closed. Four size to be chosen. Four size of the bracelets diameter is 3 millimeterThe BoRuo Advantage: BoRuo is a member of a very small number of brands invited to the Amazon Fine Jewelry category and all our products meet amazon Jewelry Quality Assurance Standards. Only those with brand strength and excellent products are eligible to enter this prestigious level.Correct bracelet size = Your wrist size + 1.5 cm (0.6 in). Please choose the correct size before place the order to avoid Return or Exchange. The paper measurement is intended for reference only. We would like to suggest you have your finger sized at a jewelry store for an accurate ring size.bead compatible perfect, Compatible with non screw European beads 4.5mm core or larger. Boruo is a registered brand with the US Patent and Trademark Office. Our logo, brand, and slogan are all intellectual property of BRC Creative Corp. MAKE SURE to only buy from BRC Creative Corp., the manufacturer. Other sellers with a New listing are not authorized by BRC Creative Corp.What You Get: Perfect gift box, FREE GIFT with each order – You get a Mini Jewelry Survival Kit – special goodies for all your jewelry needs. A silver cleaning cloth will help you to polishing your jewelry and leaving your jewelry sparkling. Our 60-day satisfaction guarantee , No questions will be asked if you are not completely satisfied with the product and want to return it.