Shoe BaseM6 is equipped with a ball head to support wide movable range (360-degree rotatable and 180-degree back and forth) with a compact body. It hasa “Locking Wingnut” on the side to lock movement or unlock to adjust combined product orientation. This design/construction provide intuitive controllability and ample load capacity to hold combined product.

Directly attaches on the “Accessory Shoe” of a conventional underwater housing etc. or INON “Shoe Base Spacer” etc.

These new Shoe Bases are designed to separate upper “Head Adapter” and lower “Shoe Base Adapter”. All “Head Adapter” has 1/4 tripod screw hole on its bottom to attach a tripod etc.

Please refer below link to see compatibility with underwater housings on INON web site.
“Shoe Base 1/4-20UNC”, “Shoe Base M6”, “Shoe Base BALL” Compatibility Chart
http://www.inon.co.jp/cgis/news/img/ShoeBase_CompatibilityChart_En.pdf