A lens holder attached on Float Arm/Mega Float Arm/Mega Float Tube or on the "M5 Joint" installed on Stick Arm/Multi Ball Arm (*1) to carry M67 series/28M67 series attachment lens to help comfortable multiple lens handling underwater. The lens holder is screwed on an arm or M5 Joint through center screw hole. (*1) "Multi Ball Arm SS" is not compatible with the "M5 Joint". "Stick Arm XS-T" and "Multi Ball Arm S" can hold the "M5 Joint" but not compatible with a lens holder. Weight: 50.0g (1.8oz) [air] / approx.25g (0.9oz) [underwater] Compatible Arm/Base etc. Float Arm S/M/ML Mega Float Arm S/M M5 Joint Stick Arm SS-T/S-T/M-T/L M5 Joint Multi Ball Arm ML/L/LL/XL Mega Float Tube S/M