K&F Concept 49 77Mm(2 Pcs) Step Up Ring Adapter, 49Mm To 77Mm Step Up Filter Ring For 49Mm Lens Install 77Mm Nd Cpl Uv Lens Filter Underwater Lighting Usb To Serial Port Converter

Usb To Serial Port Converter Allows You Easy To Establish The Reliable Connection

- Advanced Coating Resists Fingerprints

POWER OPTIONS: Operates with C-size batteries or included AC/DC power cord

Its combination of speed and capacity makes it perfect for running demanding applications

K&F Concept 49 77Mm(2 Pcs) Step Up Ring Adapter, 49Mm To 77Mm Step Up Filter Ring For 49Mm Lens Install 77Mm Nd Cpl Uv Lens Filter Underwater Lighting Usb To Serial Port Converter? Aluminium Alloy Ing? This Step Up Ring Is Made Of Aluminium Alloy Not Easy To Be Deformed, And Can Maintain Its Performance For A Long Time, Smoothly Install And Durable. ? Step Up Ring? This Step Up Ring Adapter Easily Screws Onto The Front Of Any Lens With 49Mm Filter Diameter, And Converts The Thread Size Of Your Lens To The Thread Size Of Any Other 77Mm Accessory The Lens Side: 49Mm The Filter Side: 77Mm ? Packaging Include? 2* Brass Adapter