Cokin 39mm A-Series Adapter Ring Comprehensive USB31-VGF Simulated Sine Wave Output Uses

Simulated Sine Wave Output Uses pulse wave modulation to generate a stepped

and also comes with a male-to-female thread adapter

and an upper tray with two long and nine short touch-fastening dividers

Attaches to GoPro Accessory Mount

3V or 5V regulated output voltage

Cokin 39mm A-Series Adapter Ring Comprehensive USB31-VGF Simulated Sine Wave Output UsesFor Cokin A Series Filter Holder Use Filter Holder on 39mm Filter Threads. The Cokin 39mm A Series Adapter Ring permits the use of a Cokin A Series Filter Holder on lenses with 39mm filter threads. UPC: 085831161496 Packaging Info Package Weight 0. 05 lb Box Dimensions (LxWxH) 3. 0 x 3. 0 x 0. 2" All product and company names are trademarks or registered trademarks of their respective holders. Use of them does not imply any affiliation with or