【Different Specifications】Package including 21pcs lenses in total, includes lenses with different specifications, from 35mm to 45mm 【Convenient & Perfect】With thickness of 1.2mm/0.05in, which makes it more convenient to fit the watch frame perfectly 【High Quality】Highly transparent, edge treatment, no scratches, surface and high temperature resistance 【High Reliability】Made of high qualiy material of mineral glass, which makes it durable and have high reliability 【Great Performance】Professional manufacturing, superb craftsmanship and high accuracy help to provide the best performance, Weight: 0.24030386558 Pounds, Manufacturer: Walfront