Knotted Design---Adjustable and knotted length, the extra part can be easily organized, simple and easy bracelet measuring tool Accurate and Convenient---The of the bracelet is engraved with a reading (measurement range 15-23 cm/5.9-9.1inch, spacing of 0.5cm/0.2in per two round holes). Bangles Sizer---Ideal for measuring wrists to determine the size of the bracelet. Suitable for professional use and private use. Quality Guarantee---We supply 1 year warranty, 30 days money back, 7x24 hours email support. If you have any problem, please don't hesitate to contact us, we will try our best to solve it for you. Material---Made of high-grade stainless steel, durable, harmless and environmentally friendly.