Ikelite Underwater Port 2.0 Inch Extension Ring 200DLM Mount Tools and Maintenance Kits An extended dome port providing

An extended dome port providing zoom function for most mirrorless interchangeable zoom lenses when used with the appropriate zoom sleeve

Each filter attaches to the outside of the port offering easy attachment and removal underwater

4L II USM Lens

The acrylic front element also makes it lightweight and easy to pack for travel

Ikelite Underwater Port 2.0 Inch Extension Ring 200DLM Mount Tools and Maintenance Kits An extended dome port providingIkelite 5516. 69 DLM 2. 0 inch Port Extension Extends a Mirrorless Lens Port by 50mm (2 inches) for use with longer lenses. Specifications Acetyl body What's Included Extension O ring # 0132. 36 Securing thumbscrews (set of 3) # 9249. 6 Silicone lubricant # 5020