Macro port designed for;Canon EF100mm IS USM / EF 100mm F2.8 Macro USM,AF-S VR Micro Nikkor ED105mm F2.8G (IF) / AF-S DX Micro Nikkor 85mm F3.5G ED VR.
This port accommodates listed lenses without additional port-base or extension ring. Port has M67 screw mount.
[Dimensions (DIAxD)] 128x120.5mm / 5.0x4.7inches
[Weight] Approx. 505g / 17.8 oz
[Depth rating] 100m / 330ft
[Construction] Corrosion-resistant aluminum alloy (anodized, anti-reflection coating on the inner surface)
[Distance] Between the port mount and inner glass surface : 87mm / 3.4 inches