Konova is now pushing a small Fluid Head for their SpiderTrax-Like Rotating Video Dolly or their popular Camera Roller Bearing Slider. This new little fluid head could be slightly compared to the Manfrotto 128RC or even the very nice Calumet Video Fluid Head. Obviously for a cheaper price, and possibly not at the same level of build quality. Either way, i'm sure it's a great little low profile fluid head for many DIY projects, but if you could afford to, you might want to check out the Calumet Fluid Head or Manfrotto Fluid Head.
Konova Mini Video and Photo Fluid Head
BTW - Did anyone catch that other seller for the Konova Roller Bearing Slider that offers free shipping? Essentially saving you another $50 bucks? [Thanks Chris S.]
Konova Roller Bearing Slider