1. Modular combination structure is adopted. 2. The handle fluctuation screw is made of stainless steel, which is thicker, higher strength and beautiful appearance. 3. Silicone damping ring is used for damping of rotating structure to reduce pollution caused by leakage of damping oil. 4. The color combination of red and black is more beautiful and atmospheric. 5. The external structure is designed with anti-slip teeth. The assembly structure is connected with 5 stainless steel screws with screw ring, and a wrench is provided. M42 CAA 360-degree rotary composition adjuster high-precision processing Thickness extension: 12.5MM M42 x 0.75 external thread: 3MM M42 x 0.75 internal thread: 5MM / M48 CAA 360 ° rotary composition adjuster Thickness extension: 12.5MM M48 external thread: 3MM M48 internal thread: 5MM / M54 CAA 360-degree rotary composition adjuster high-precision processing Thickness extension: 12.5MM M54 x 0.75 external thread: 3MM M54 x 0.75 internal thread: 5MM Colour:red+black Material:Metal<br><br>Package Contents: 1 x Rotator Camera Angle Adjuster Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.