9.Solutions Heavy-duty Python Clamp (rough coating, stronger pin and large handle bar)

Manfrotto 635 Clamp Super Quick Action TUV 13/55mm 15kg Payload 16mm hex socket.

Ercole M11-058 Nano Clamp.

The Manfrotto VR Super Clamp is easy to use, strong and reliable. It is completely made of aluminium, and is the perfect VR clamp for professionals looking for a dependable, practical tool for their VR shooting. Not only is it thoughtfully designed to make set-up simple, it is also strong enough for any challenge, even on the most demanding shots.
This ultra-adaptable accessory easily supports up to 15 kg, but thanks to its compact aluminium body weighs only 430 g, so it’s super handy to pop into your bag at the end of the day. Moreover, it stretches from 13 mm right through to a maximum 55 mm, so you can pair it with a variety of accessories, hassle-free.
To get started, just lock into place in a couple of quick moves. You can rely on its distinguishing feature: the ability to keep everything securely locked in position.