T6061 grade aluminum main body, S304 stainless steel screws, elaborately CNC machined with hard-anodized finish ensuring it's resistant to corrosion and abrasion. Model: DDH-06 Top Base Diameter: 52mm Height: 16.7mm Net. Weight: 82g Mounting Thread: UNC3/8" Max Load: 20KG SUNWAYFOTO DDH-06 Precision Panning Base with integral clamp and bubble level for smooth and level panning. The scale with laser-engraved centering index marks can precisely master any angle variation during each shoot in horizontal rotation, the aligned scale of quick-release plate can accurately control the nodal point during the panoramic photography in different focal lengths. So the panoramic photography could be more accurate and high efficient.