You could not construct this derailleur more cheaply if you tried - but the underlying design is a Shimano Deore XT, with two sprung pivots, slant parallelogram and adjustment screws at the back.

See also the Falcon Dynamax 10.

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• Derailleur brands: Saiguan
• Country: China
• Date of introduction: 2003?
• Date of this example: 2006?
• Model no.: HG-08
• Weight: 307g including hanger plate
• Maximum cog: 32 teeth?
• Total capacity: 36 teeth
• Pulley centre to centre: 85mm
• Index compatibility: 7 speed?
• Chain width: 3/32”
• Logic: top normal
• B pivot: sprung
• P pivot: sprung
• Materials: mainly steel with a plastic front knuckle.