SUNWAYFOTO DMP-200R Rail Nodal Slide w Arca RRS Compatible Clamp DMP200R Sunway Fully RRS Lever Clamp compatible Double Arca Dovetails Accepts QR's from RRS Wimberley, Jobu, Arca Swiss, Kirk, Markins, etc. Multi-Purpose Rail Nodal Slide DMP-200R w 40mm Clamp Fully RRS compatible Double Arca Dovetails Precision machined from solid aircraft-grade aluminum