Think Tank EP-NSI for nikon screw in mounts

The Think Tank EP-NSI is a waterproof eyepiece designed for Nikon screw-in viewfinder mounts (e.g. D5, D4, D3, D800 series, D700, D500). It is required to maintain a watertight seal when using Think Tank Hydrophobia rain covers. The EP-NSI is CNC-machined from Delrin with high-density foam padding, forming a durable and comfortable interface.

• Waterproof seal for viewfinder: Allows use of Hydrophobia rain covers without moisture entry. 
• Compatible models: Fits Nikon D5, D4, D4S, D3X, D3S, D3, D800, D800E, D700, D500 and other Nikon DSLR cameras with screw-in eyepiece mounts.
• Material build: CNC-machined Delrin acetal resin with high-density foam padding for comfort and durability.
• Essential accessory: Required component for the Hydrophobia rain-cover system to function properly on compatible cameras. 

This eyepiece ensures that the viewfinder remains usable and protected in wet environments, making it a necessary and reliable option for outdoor work.