The H+Y REVORING Bundle includes the 37-49mm, 46-62mm, and 67-82mm Variable Adapter. The REVORING Variable Adapter removes the need for step-up rings as with it you can apply a screw-in filter to multiple lenses simply by attaching it to the adapter. Light leaks are prevented by the careful design of the threaded ends that overlap. Furthermore, the threaded ends securely attach to the front of your lens, ensuring that the filter stays firmly in place. Constructed from Architectural-grade Aluminium, the adapter is protected against corrosion, making it perfect for outdoor use no matter the weather.