In the Box: 

12 x Replacement Top Fan Blades

1 Pc x  Fan Blades Hub Holder 

Pyramid Fan Blades Hub Holder Details are :

Height: 4.3 inches and Diameter on the largest side is 2.4 inches with 12 pre set holes to fit the 12 fan blades needed ( Fan blades INCLUEDED )

Pyramid Fan Blades Details are :

Fan length with shaft: 4.5 inches and without the shaft is 3.9 inches and the Width of the Fans: 1.9 inches at the widest side.