Doughty T21101 C-Hook BK

These hook clamps are from the reputable Doughty brand, however their slightly different shape means that there is a smaller than usual gap between the curved end of the clamp, and the base. This makes it difficult to get the clamp on to the lighting bar without loosening the main suspension bolt (the bolt which holds the lantern to the hook clamp). In future, I would buy the squarer version. Of course, you could use shorter M10 bolts to get round this, if you have them

I have a number of these clamps and use them with various fixtures of all sizes and weights. great, reliable clamp. adjusts to various sizes of tubes and is a great all round addition to any lighting rig.

Very strong and easy to use. I will be getting some more of these soon, thank you!

Pros:
Quality hook good for different pipe sizes from 50mm truss to 20mm tripod.
Black finish is good for stage use. Don't want any extra shiny bits on stage.

Cons: screw makes scrathes to pipes.

This product has a very good building quality. It looks and feels like it could easily survive the third world war without any scratch. Also, because of it's color, it is really inconspicuous on the traverse.

good price, and they have an impressive range of bars they can grip on to tightly. There is a bit of a gap when you attach it to a small bar but it still grips on tightly.

I bought these for some LED Par64's of mine, as a kind of in-between choise of a regular clamp and a manfrotto super clamp, since those are quite expensive.
This works well on most things since it can grip down to 20mm. And as always, rugged Doughty-quality.