clamps

I got these spring clamps years ago. of course I can't remember where. Their the best clamp in my shop. For the ends of canoes, stems, pulling outwales together at the tips. The teeth on them are very sharp . Will easily put a hole in your finger. They hold at any angle. Won't slip off. I can't find them anywhere. Would love to have some more. Any ideas ? I'll keep looking , I think I got them from a small tool shop. They do make some spring clamps with grippers on them but not like these. Dave

 

I have some plastic versions (in the UK ) but they don't have teeth just rubber pads so probably not as good.Now I've seen yours I might add spikes to them.
Thanks for sharing.
Alick

 

Another variation, the red clamps are an accessory from Bessy. "Pivoting Wide Angle Jaw Adaptor' "plus or minus 15° pivot", for their K clamps, but with some epoxy and plastic shims can be made to fit on a Quick Clamp.