The Bessey DuoKlamp DUO one handed clamp that change from clamping to spreading by switching, not converting and it is all round clamping in front of, behind and at the side of the rail.
The Bessey DuoKlamp DUO one handed clamp that change from clamping to spreading by switching, not converting and it is all round clamping in front of, behind and at the side of the rail.