No its not an optical illusion or anything. It is a 6" dia. trailer ball. Its solid aluminum and the company I got it from was elephantow.com 12 years ago. They are out of business now I guess not too many people bought them at $250 a piece. You can get a cheap plastic one from.... http://www.drawtite.com/v53300.html

Its a pretty good conversation piece.

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1999 Ford Ranger XLT 3.0 5 speed 4X4. Cranked T-bars 2in. blocks, 3.73 gears and 33x12.50-15 General Grabbers on ProComp 152's 3.75bs.