The Sea & Sea Compact Macro Port can be used on Nikkor AF-S Micro-Nikkor 60mm F2.8G ED, Nikon Ai-AF Micro-Nikkor 60mm f2.8D, Cannon EF-s 60mm F2.8 Macro USM and Tokina AT-XM35 Pro DX 35mm F2.8 Lenses. The Port is compatible with Sea & Sea SLR and Digital SLR housings including the DX-S5Pro, DX-D200, DX-D80, DX-D50, DX-D70, DX-S2Pro, and DX-D100. The Port measures (Dia. x D) 4.1" x 2" (102.5mm x 51mm), weighs approximately 7.9oz (227g) and is depth rated to 330” (100 meters). The port is constructed of corrosion-resistant aluminum with an alumite coating finish and tempered glass. The distance between the mount and the glass surface is 0.8" (21.5mm). The Port is covered by a 12 month limited warranty.