New Hejnar Photo Quick Release 8.00-inch rail and 1.5-inch mini clamp. Something like rail with integrated clamp after assembled. Works nice as nodal slide for panorama photography do provide 2 dowel pins with rail. They prevent clamp from twisting. The clamp itself is 1.5 inch with dual mounting and captive style knob. Clamp can be oriented in 3 different directions when mounted onto rail. Hard coat black anodized surface. If you want clamp go higher just use 1/4 or 3/8 spacer block. (Spacer block sold separately)
It is the best quick release system for tripods and monopods when combined with Arca style ball head and quick release clamps. International standard dove-tail rail, compatible with Arca-Swiss type quick release clamps and rails.