SmallRig Top Handle (Rubber) 1446 bolts on directly with 2pcs 1/4″ screws (the adjustable space between two 1/4” screws is 30mm-40mm).
1/4-20 mounting points in front for accessory mounting, such as SmallRig rosette-1272, clamp-1407, Railblock-1421 or Cold Shoe.
Comes with a built-in cold shoe base on top of the handle for more extension, such as ball head, magic arm (smallrig 1498), cameras lights and microphones, or other accessories.

SmallRig Multi-function Double Ballhead 1138 is a multifunctional double ball head with a clamp at the bottom and a 1/4″ screw on the top.
It can mount monitor and LED Lights on the one end via 1/4¡¯¡¯ screw, and it can lock the rod on the cage via the clamp tightened by the locking knob.
It could be attached and detached from the monitor quickly and the position of the monitor is adjustable as per your needs during shooting.