B009R0YTMO NOVOFLEX Q-Mount Cross-Clamping Quick Release Base Without Plate (Q-Mount-X)

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Q-MOUNT-X Cross-Clamping Arca-Style Quick Release Adapter with tightening knob (Sold without Arca-Style QR Plate).
Camera mount: ARCA-compatible
Tripod mount: 1/4?0
Comes with integrated Spirit Level
German engineered and manufactured