512001 ModularHose.com Round Tube and Flat Surface Clamp Kit. The clamp is ideal for mounting Loc-Line arms and more to round tubes and flat surfaces. Adjustable jaw easily opens up to 2.5" and closes with twist handle. Includes wedge for clamping onto flat surfaces. For photographers (video/photo/light applications), it also includes a dual locking 5/8" hexagonal female receiver for studs and arms plus a snap-in 5/8" pin that will accept many small light fixtures. Includes: - Pro Clamp - Attached Loc-Line Connector (can be removed if necessary) - Flat Surface Insert - Dual Locking 5/8 Hexagonal Stud - Mini Snap-In 5/8 Pin