The Urth 86 39mm adapter ring is a practical accessory for photographers using a 100mm square filter holder. This adapter ring allows the use of screw filters with a diameter of 39mm, increasing flexibility in filter application. The adapter ring is made from durable material that ensures a long lifespan while providing a secure connection between the lens and the filter holder. With easy mounting and dismounting, the adapter ring is user-friendly and suitable for both experienced photographers and beginners. This product allows for the seamless use of various filter types, such as polarizing or ND filters, to enhance image quality and achieve creative effects. The Urth 86 39mm adapter ring is therefore a valuable addition to any photography gear, enabling versatile filter usage.