Cokin X-Pro Series Filter Holder Adapter Ring (77mm) Hoya A-77YA3 4-digit 7-segment displays are really

4-digit 7-segment displays are really neat little devices

3 cm) Weight Capacity 220 lbs (99

Alligator clips (or Crocodile clips

7 cm) Weight 5 lb (2

the sensor can detect when an object passes between the uprights

Cokin X-Pro Series Filter Holder Adapter Ring (77mm) Hoya A-77YA3 4-digit 7-segment displays are reallyEnables Use of Cokin X Pro Filter Holder Anodized Aluminum This 77mm X Pro Series Filter Holder Adapter ring from Cokin attaches to the lens and adapts it to fit the X Pro Series Filter Holder. Once the adapter and holder are attached, the lens filters can be slid into the holder and used accordingly. The adapter ring is made from aluminum, which has been anodized for durability. UPC: 085831520101 Lens Compatibility For a lens with a 77mm filter mount