Head knockers are typically made from plastic or cast resin. Many listings also note the figures are hand-painted, which enhances sculpted details and finish.
Most head knockers use a spring or spring-loaded mechanism in the neck that allows the head to bobble when tapped or moved.
Descriptions commonly state head knockers come in collectible matte packaging with spot-gloss accents or finishes to highlight artwork.
Most listings show a suggested age of 14 years and up and include a CPSC choking hazard warning for small parts.
Bullet details list 12 points of articulation for the figures.
