More , using high-toughness PC material, anti-collision, long service life More flexible, more agile, more violent Higher efficiency and more delicate Compact size, exquisite appearance Compatible with for system Item name: T5147.5 Porpeller Quantity:2 x left-handed, 2 x right-handed Diameter:5.1inch Center thickness:7mm Center hole inner diameter:5mm Applicable motor:2205-2306 Due to different batches, the printed words on the product will be different, which does not affect use. Colour:Fluorescent Green Material:PC Package Contents: 2 Pairs * Propellers (2CW+2CCW) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.