This is an Arca Swiss B1 Monoball head with attached quickrelease clamp. It has traveled with me around the world and therefore hassome scratches and scuffs which doesnt affect its functionality.Its rated for a 90 pounds load and has an aspherical ballhead. This means that as the load on the head moves away from thecenter, the tension automatically gets tighter. You can adjust tension via a small thumb-dial on the mainfriction knob. It has an indexed friction control knob so you cantight/loose without having to test it.
There is an indexed 360 degree panning base (helpful for panoramicshots). Requires no maintenance other than wiping the dust off andkeep it loose when not used. The item "Arca Swiss B1 Monoball Ball Head quick release plate rated 90 lbs" is in sale since Sunday, November 17, 2019.This item is in the category "Cameras & Photo\Tripods & Supports\Tripod Heads". The seller is "miamibay305" and is located in Powell, Tennessee. This item can be shipped to United States.