1. Modular combination structure is adopted. M42/M48/M54 screw structures can be interchanged. 2. The handle fluctuation screw 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. 1. The color combination of red and black is more beautiful and atmospheric. 2. The external structure is designed with anti-slip teeth. CAA 360-degree rotary composition adjuster high-precision processing Colour: Black & Red Material: Plastic<br><br>Specification: M42 Threaded ring Package Contents: 1 x CAA 360 ° Degree Rotator 1 x CAA M42 Threaded ring set<br><br>Specification: M48 Threaded ring Package Contents: 1 x CAA 360 ° Degree Rotator 1 x CAA M48 Threaded ring set<br><br>Specification: M54 Threaded ring Package Contents: 1 x CAA 360 ° Degree Rotator 1 x CAA M54 Threaded ring set 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.