Ideal for architectural and macro photography, the black GC-01 58mm Panormaic Geared Clamp by Sunwayfoto is a 360 Arca-type panoramic clamp designed with a one-gear drive, quick-release, and fine-tune features. The clamp utilizes two knobs that work the locking and gear adjustments and can be installed on almost any head by replacing the QR clamp or via the supplied Arca-type QR plate. Additionally, it includes a bubble level and a 3/8"-16 mounting socket. Gear Drive, Fine Adjustment, Higher efficiency on photo composition and framing Ideal for architectural, macro and portrait photography