This Aqua Tech LP-5 Flat Port is used for Medium Size Lenses. The port is threaded and no tools are required to add or remove it.
For lens port chart click here
Acrylic front element is scratch and abrasion resistant
Cast acrylic tube for port body
Medium diamond knurl grip for ease of installation
Piston seal o-ring on major thread base
AquaTech underwater housings released in 2012 and earlier only