K&F Concept Metal Lens Filter Step Ring Set (18pcs Step Up & Down Ring)

• 9pcs Step Up Filter Adapter Ring Kit (37-49, 49-52, 52-55, 55-58, 58-62, 62-67,67-72, 72-77, 77-82mm) • 9pcs Step Down Filter Adapter Ring Kit (49-37, 52-49, 58-55, 55-52, 62-58, 67-62,72-67, 77-72, 82-77mm ) • Great tightness,no wobbling or cross-threading. Ultra-low chemical residues, attached to a solid! • Converts the thread size of your lens to the thread size of any other accessory (such as filters, hoods, flashes and lens converters). • Special aviation aluminum alloy, high strength, impact resistance, twist and pressure.