APC Folding Propeller Hub 45mm LPFH3
Two-piece, gray composite propeller hub that goes on each side of the folding propeller blades to hold them in place (blades are not included)
Hub has molded nut insets for easy tightening.
Overall Length: 58mm
Length between blade mounting centers: 45mm
Inner mounting diameter: 8mm

Dimensions 
Hub Thickness: 0.039" / 10mm
Shaft Diameter: 0.031" / 8mm
Product Weight: 0.35oz / 9.22g
Color: GREY