Proaim Mitchell Camera Height Riser

The diameter of the Mitchel mount disk is 175mm.

The material of clamping mechanisms is stainless steel and aluminium.

Yes, you can remove the lock mechanism but there is no 3/8" threaded hole in the Mitchell mount so you cannot attach half bowl adapter BA-100.

The Proaim Mitchell Camera Height Riser (MR-291-01) is compatible with the Polaris dolly, however, it can only be used on the top of the Polaris and not as underslung mode.

Yes, you can attach the Proaim Mitchell Camera Height Riser MR-291-00 to the underside of a Dana dolly but you have to reverse the platform of the dolly. After reversing, the Mitchell riser will lock properly and you can use your setup.

The Proaim Mitchell Camera Height Riser has the Mitchell base. This can be used as a 100mm bowl with the help of Proaim Mitchell Base to Bowl Adapter BP-302-00. Here is the link for reference :https://proaim.co.uk/products/proaim-mitchell-base-to-bowl-adapter-mitchell-top-plate