Feature: 1. Equipped with a wrench and a conversion screw, it can be used with a variety of equipment, and different equipment can be used in different scenarios. 2. Ball head is locked clockwise and reversely for the free panorama mode, and locked counterclockwise for the indexing mode. 3. A scale at the bottom, 360° rotation, always find the angle you want to shoot, and provide more shooting pictures. 4. There is a removable for Arca Swiss standard dovetail version at the bottom, and is equipped with a 3/8in screw hole. 5. Multiple multi‑angle built‑in spirit levels, which can keep the shooting level at all times after installation. Specification: .Item Type: Ball Head Base Clamp Material: Aluminum Alloy Color: Black Weight: Approx. 246g / 8.7oz Features: Level Meter / Scale Ruler / 3/8in Screw Hole / Removable for Arca Swiss Standard Dovetail Version Package List: 1 x Ball Head Base Clamp1 x Slotted Wrench1 x Conversion Screw1 x Hex Wrench1 x Storage Bag Note: 1: Don't put it higher than to prevent damage caused by falling.2: Do not twist the button vigorously.