Feature: 1. Applications: The extension arm can add extra height to the tripod, suitable for landscape photography, portrait photography, etc., to shoot a wider range of beautiful scenery, and also suitable for low angle macro photography, adding more possibilities and diversity to shooting. 2. Flexible Angle Adjustment: The central axis bar can move horizontally, rotate 360 degrees and tilt 180 degrees, allowing you to freely adjust the shooting angle to meet your various shooting needs. 3. 3/8 Inch Screw and Holes: The base has 3/8 inch screw holes for easy mounting to most tripods, ball heads, monopods, etc. Also features 3/8 inch screws, compatible with most cameras. 4. Durable: Made of sturdy aluminum alloy material, the tripod extension arm is sturdy and durable, the diameter of the shaft tube is 25mm, and the bearing capacity is up to 10Kg. 5. Strong Locking: The screw knob locking system of the extension arm makes operation easier and faster, more stable and convenient to use. Specification: Item Type: Tripod extension arm Material: Aluminum alloy, rubber Gross Weight: 827g / 29.2oz Length: 49cm / 19.3in(excluding screws) Bearing Weight: 10kg / 22.0lb Pipe Diameter: 25mm / 1.0in Horizontal Axis Thread: 3/8 in screw Base Screw Interface: 3/8 in screw hole. Package List: 1 x Tripod Center Column Extension Arm1 x Base