B2-Duo: 60mm Sliding screw-knob clamp

SKU: B2-Duo

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Sliding Screw-knob Clamp, 60mm jaws
Featuring dual mounting surfaces on either side of the clamp, the B2-Duo allows two Really Right Stuff compatible plates or rails to be positioned and affixed in a parallel orientation with one atop of the other. The B2-Duo is the ideal clamp solution for mounting a Really Right Stuff lens or camera body plate atop of a Multi-Purpose Rail or Camera Bar.
Two nylon thumb screws provide a secondary clamping option independent of the main locking knob in order to hold the B2-Duo clamp fixed to one rail while moving or adjusting the second rail. This feature is ideal when mounting a telephoto lens plate atop of a Really Right Stuff camera bar as the user is able to fix the B2-Duo to the bottom of the lens foot, yet still slide the clamp along the camera bar for best positioning.
Because both clamping jaws are simultaneously adjusted by the main locking knob, all quick-release plates used with the B2-Duo need to be the exact same external dimensions. For this reason, the B2-Duo is only compatible with Really Right Stuff brand or Wimberly brand quick-release plates. Mixing plates from other manufacturers might cause clamping fitment issues.

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Versatile double clamp designed primarily to use with our Multi-Purpose Rails and Camera Bars.

The simple, low profile design allows a collared lens or camera to be fixed in the top half of the clamp and still allow the B2-Duo to slide fore-aft (lens) or side-to-side (camera) on our Multi-Purpose Rail or Camera Bar. This makes for an affordable focus rail/nodal point slide for collared lenses or a sliding stereo photography set-up.

Index marks are laser-engraved on all four sides in the standard RRS zero, 12 and 18mm-on-center increments.

Two non-marring nylon thumb screws securely lock in place whatever is mounted on that side of the clamp. The B2-Duo can then be loosened using the main screw-lock knob to allow it to slide fore/aft or side-to-side on the Multi-Purpose Rail or Camera Bar.

Note: The B2-Duo clamp should only be used with plates & rails from the same manufacturer. Due to the nature of the single clamping jaw (i.e., clamps both top and bottom plates simultaneously), this clamp cannot accommodate Arca-Swiss style plates that vary in width.

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