SUNWAYFOTO brand DYH-90i 90mm Leveling base with removable Offset Bubble Level. Super smooth / Fluid dampened 1. Anodized to a scratch-resistant, black finish. 2. Captive Screw-knob lock control. 3. Rock Solid Platform. 4. 90mm diameter of the platform fits medium size equipment. 5. Great for tripods with no built-in bubble level, install between tripod and tripod head. 6. Adjusts to +/- 16° (degrees). 7. 3/8" socket mount and 1/4" top stud (includes 1/4 to 3/8" adapter). Diameter (top): 90mm. Diameter (base): 76mm. Height: 50mm. Weight: 476g. Max Load: 30kg (66lb). All metal construction. Control lever is also metal with no plastic or rubber. Includes removable bubble level.