This is a poorly designed product. It won't stay in the position you tightened it. I'm an engineer and when it started behaving this way I took one of them apart and it looked like a very poorly designed product to me. It can be suitable for very light loads, but just hold it in your hands and tighten. You will find that you can move it just by pressing it with your hand, nothing to do with it.
1K Ball Head By Joby: Boost Your Camera'S Stability And Maneuverability
14 Review
ANNSM Tripod Ball Head With 360Β° Swivel And Rotation, 3/8 Inch Hot Shoe Adapter For DSLR Cameras, Camera Sliders, Stabilizers, Camera Cages, Microphones, LED Video Lights Monitors & Flashes
13 Review
Canon EOS 6D Body camera, black
115 Review
Lightweight Aluminum Travel Tripod For DSLR SLR Cameras And DVs Up To 75 Inches With Carry Bag - Compatible With Canon, Nikon, Sony, Olympus And More.
15 Review