The used MoVI M15 Adjustable Camera Plate from Freefly is a hard anodized aluminum plate designed for the MoVI M15 and M10 gimbal stabilizers.
The plate features two 1/4"-20 holes and two long 1/4"-20 slots to allow for maximum camera mounting flexibility. Long and short 1/4"-20 camera mounting screws are included. Additionally, there threaded 3mm holes on the front face of the plate for attaching an optional focus mount.