Quoted: Really Right Stuff: your camera support experts. We design, build, aquire and sell the very best tripods, ballheads, quick-release clamps, and quick-release plates available anywhere. From the casual weekend shooter to the most demanding professional, discriminating photographers in over 80 countries around the globe rely on the experts at Really Right Stuff for all their camera support gear. Our quick-release system makes setup faster and easier, and better stability means better results. Visit us online at http://reallyrightstuff.com.

Quoted: Serious photographers around the world recognize the performance advantages that Kirk products deliver in the studio, and in the field. Kirk Quick Release equipment lets you easily switch cameras and/or lenses when seconds can make the difference between getting the shot and missing an opportunity. Kirk also offers a complete line of exclusive camera mounts, flash brackets, custom and modified tripods, precision tripod heads, adapters, books, videos, accessories and much more.

Thom Hogan (http://bythom.com/support.htm) writes about this ballhead:

"A strange looking head, but it is light (1 pound) and works quite well. I especially like the fact that I can keep the ball clean while traveling in hostile environments. Strongly consider getting the rubber knobs (an extra cost option), as the metal knobs are rough on the hand when you do a lot of fiddling."

Quoted: What you need to know about tripods and heads.