This is one of the same clamps used on our Balun Mounting Plate and is excellent for mounting areas that require a small footprint. Constructed as a stainless steel clamp but with a stainless mounting stud welded to the clamp body. Works extremely well and will handle booms, masts or whatever upto 2.5 inches in diameter. Also allows rotation of the balun for off center mounting requirements. Additional Photo:  Clamp   I'm sorry, but because of my current supply, this clamp is only available with new orders or to existing customers. Balun in photo for illustrative purposes only and is NOT included.