Review on Higoo Universal Camera Flash Hot Shoe Rail Adapter - 20mm for Optics Scope Sight: An SEO-friendly Upgrade! by Joseph Morris

Great quality and works great; under the condition! With a large knurled nut it is quite difficult to fix the mount in the camera shoe. Because of the game, you can use the device itself as a screwdriver handle. It's tricky and when it's very tight it's hard to remove, but with care it can be done. To mount, insert the device base into the camera shoe and tighten the knurled nut by pulling it counterclockwise on the bracket. Now tighten the nut firmly and rotate the bracket counterclockwise until it stops. Now turn BOTH devices with the nut clockwise until it stops. Repeat as necessary: while holding the nut, turn the fastener counter-clockwise until it is where you want it or until it reaches the end of the stroke. Do not rotate the device AND simultaneously clockwise to the end of the rotation. As a result of this process, the device sits extremely firmly in the shoe. After installing this way, adjust the attached device (red dot sight) if necessary by turning it clockwise or counterclockwise; it will be very crowded! Removal is the opposite of this process. Otherwise it is a quality product!