This is the APC 16X12 Electric RC Plane Propeller

Thin Electric
Use LPAR06E adapter rings
Includes one set of rings from LPAR06E

Pitch (inches): 12
Propeller Diameter (in.): 16
Hub Diameter: 1.00 in.
Hub Thickness: 0.48 in.
Shaft Diameter: 1/4 in.
Product Weight: 1.83 oz.
Color: GREY