Lidl do decent f clamps for 9 euros.
I think its a choice of three sizes now that they sell, since design seems to have changed in the last 6 months.
The newer black thread isn't as long and the foot quite as well made, and handles are a tad bit slippery, might need a skuff with sandpaper,
Quite heavy duty, the bar is still the same and has heavy profiled shape on all three sizes.
These are heavy!, you'd want to be a blacksmith to damage them.
I didn't look at the feet on the smaller ones to see if they were better than the poundshop or cheapest silverline variety though.
Choice of three x smaller ones, 2 x 80mm throat, or a single beast of a one.
I have gotten spoilt with about 10 of these now, and use them for everything as the handles are nice and chunky and easily grabbed.
Often residing near fully extended on an old chair to be at hand.
View attachment 92616