Durable, glass fibre-reinforced nylon construction and tough, forged steel rail with corrosion-resistant, black-oxide coating. Lever clamping action with simple, one-hand operation and instant release button. Precise control over clamping pressure. Durable, non-marring and non-marking protective jaw pads. Quick-twist lever turns the clamp into a spreader.
We purchased a pair of these clamps at Makers Central last year, along with a pocket hole jig. We used them for the first time in a wooden glue up of an endgrain chopping board. And they were brilliant really gripped the wood tightly.
The following day, when we removed the clamps, I wiped off any excess glue that had gotten on the clamps. When I went to use them again a month later, the bar had very badly rusted in many places. I ended up having to strip of the black coating and recover with Bisley gun blue. So although the clamps worked great the coating on the bar was much to be desired.
Great clamps if you don't care what they look like!sharron knowles - 01/10/2020