Optiline 90554 Adaptor ⌀ 25 mm Duolock Conversion Head
S$19.80
or 3 installments of S$6.60 with 
or 3 installments of S$6.60 with
Adapter for non- Optiline holders
The head adheres perfectly to any mounting system that uses a 25 mm ball such as RAM® mounts. It is possible to lock the chosen angle thanks to the convenient ring nut.