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.