The 58-49 Step Down ring by Kenko is designed to allow the use of 49mm filters on lenses with a 58mm thread. This high-quality Step-Down ring is made of durable materials and ensures a snug fit between your filter and lens, preventing light leaks and distortion. It is ideal for photographers who want to expand their filter collection without purchasing multiple sizes of filters. The Kenko 58-49 Step Down ring is a must-have accessory for any photographer looking to enhance their creative possibilities. Step up your photography game with this versatile and reliable product.