NISI STEP-UP ADAPTERRING BRASS 46-49MM

NiSi Step-Up Adapterring Brass Made of high quality Brass and have knurled sides for firmer grip. This ring also have anti reflective treatment on the inside of the ring.A step-up ring allows you to fit a filter that has threads larger than your lens. If you have 77mm lens thread and want to fit an 82mm filter, you need a NISI STEP-UP ADAPTERRING TI 77-82MM .The first number indicates which thread your lens has and the second number which thread your filter has.