The Klunker is 680mm wide, has a comfortable 45° sweep, and 3″ (7.6cm) of rise. The clamp diameter is 25.4mm and the grip area is 22.2mm – standard outer diameters for mountain and city brakes and shifters.
As a bonus, the interior diameter of the grip area is 19.4mm, so it will accept bar-end shifters.
Stem Clamp: 25.4mm
Sweep: 45 deg