Sea&Sea Extension Ring 20L #30123

[Description]

[Dimensions (DIAxD)] 129 x 35.5mm / 5.1 x 1.4 inches
[Weight] Approx. 154g / 5.4 oz
[Depth rating] 100m / 330ft
[Construction] Corrosion-resistant aluminum alloy (alumite coating)
[Distance] Between the mount and the front end: 20mm / 0.8 inches (with port lock)

Instruction Manual for "Extension Ring 20L"（1.14MB)