PREMIUM MATERIAL: Made of Premium Top Grade German Beechwood. It is excellent for minimal elongation, breakpoint and distortion, therefore it is the best for making Wooden Model Airplane Propellers. CNC DIGITAL IMAGING: CNC digital imaging process ensures consistent quality in diameter, propeller blade profile and pitch which are all crucial for RC aircraft performance. PRE-BALANCED* : Each Xoar prop is manually finished to reach perfect surface smoothness. It is balanced both horizontally and vertically for minimal vibration caused by airplane propeller. SPEC: Number of Blades: 3 | Diameter: 28 in | Pitch: 10 | Weight: -g | Shaft Diameter: 8mm | Type: Tractor Propeller