(From company literature) Manfrotto 484 Mini Ball Head. Designed with the SLR photographer in mind, the new 484 Mini Ball Head is a direct replacement of the 3262 Midi Ball Head.
The 484 features a strong die-cast construction, precision machined aluminum housing, and an extremely hard phenolic resin ball which provides smoother movements across all tilt positions. The double-groove also makes this head extremely versatile, and the single ratchet control lever securely locks both the +90 / -90 degree ball and 360 degree pan movements.
Camera attachment is via a 2" platform with a 1/4"-20 male thread, and head to tripod attachment is 3/8" female.