You are buying (4) four decorated individual blades for a 42" ceiling fan. These are universal blades (17" long) that fit most 42" ceiling fans. They are hand crafted ceiling fan blades perfect for any child's room, office, den, garage, playroom, bedroom, restaurant, etc. The blades are pre-drilled with holes for mounting, but may require additional drilling. The blades are reversible with a white finish on the other side.