7"/17.7cm Double 1" ball and YS head adapter arm sony-flat-salted-line-ch-a7iv there's no need to purchase

there's no need to purchase a new one to fit a different lens — simply swap the extension ring for a perfect setup

typically a ridged or toothed ring

4 DC DN | C for Sony E-mount (Autofocus only)

Sea Frogs Extension Adapter Ring V2 for 6" & 8" Dome Ports

Sea Frogs CH TG5

7"/17.7cm Double 1" ball and YS head adapter arm sony-flat-salted-line-ch-a7iv there's no need to purchaseAluminum Double 1" Ball and YS head adapter Joint Arm Section is a 7" section used to join with other components of Lights 1"ball joint arm system. Construction: Corrosion resistant aluminum alloy (hard anodized body) Length: 7" 17. 7cm Weight : 2. 9 oz 82 g 1 Inch ball adapter on one side