Manfrotto 124 Clamp Pivot for Boom Shafts For 19, 20, 25 & 28mm diameter

Due to its spring loaded clamping, this cold shoe clamp enables one to one-handedly mount shoe fitted equipment very easily. Its finger screw serves both as a push knob for opening the clamp and for tightening down the clamping securely.
It fits the standard shoe sizes of 18, 20 and 22mm.
The Cold Shoe Clamp is tapped with 1/4″-20 and 3/8″-16 holes on the back side

The Manfrotto Tilthead Shoe Lock features an adjustable ‘screw locking’ shoe mount which offers an additional locking mechanism to work alongside the built in method used on the flashgun.

The dimensions of the Hotshoe on the bottom of each flashgun can vary from one gun to the other. However, the Tilthead Shoe Lock can comfortably accommodate these variances.

Ercole MK-9A Mini Ball Head 25mm with cold shoe with 1/4″ screw hole.