Material: Carbon NylonSize: 10 x 4.5''Diameter of Shaft: 6.0mmThickness of center: 9.7mmRecommended wheelbase: 550mm - 700mmRecommended motor: 800KV - 1100KVPackage size: 30 * 20 * 5cm / 12 * 8 * 2 inPackage weight: 140 g / 5.14 ozNote：The Color Has Light Difference.Package list:5 * Pairs Carbon Nylon 10x4.5" 1045 1045R CW CCW Propeller