Features: Real machine 1:1 molded made, two material types are available, metal or plastic. Good and seamless joint of guide rail and camera track. Very convenient to use and can be installed with a simple push. Guide rail CNC integrated molding, display the quality, more practical. It is a necessary part of the camera, you will need it. Specification: Condition: Brand New Color: Black Material Options: Plastic, Metal Size(L*W*H): Approx. 4.5 * 1 * 1.5 cm / 1.8 * 0.4 * 0.6 in Weight: Approx. 5-8g Package List: 1 * Guide Rail Adapter Package List 1Real machine 1:1 molded madetwo material types are available, metal or plastic. 2Good and seamless joint of guide rail and camera track. 3Very convenient to use and can be installed with a simple push. 4Guide rail CNC integrated molding, display the quality, more practical. 5It is a necessary part of the camera, you will need it.