Horizontal, longitudinal, two?way indexing dial, accurate indexing, click touch, blind Take/Attempt, adjust to gear 4 for 90 degrees, gear 6 for 60 degrees, gear 15 for 24 degrees and gear 24 for 15 degrees. Multiple ?slip design, the camera from falling off and the camera, fast storage, easy to carry. The is made of aluminum alloy material, , fine workmanship, strong and wear?. There are standard /4in screw, 3/8in screw holes, can be connected to tripod, camera and other equipment. The can film 720 degree?3D, the indexing of bidirectional indexing plate is accurate, and it is fast and convenient to eversion and film ground.