Features： 1、Using Plastic: The propeller is made of ABS plastic, resistant to abrasion and impact, and can be used for a long time. 2、4 Blade Design: These propellers are of 4 blade design, with high wind and thrust, and good performance. 3、With 2mm Hole: The 4 blades propeller has an outer diameter of 80mm with a 2mm hole, which can be matched with a 2mm motor. 4、10Pcs in 1 Set: The kit contains 10pcs plastic propellers, which is small and compact, easy to install and replace, and has strong practicability. 5、For DIY Toys: Often used as DIY toy accessories, such as remote control car models, electric boat toys, etc. Specification： Item Type: 4 Blades Propeller Model: XR-149 Material: ABS Purpose: Suitable for DIY toy accessories remote control car model Outer Diameter: Approx. 80mm / 3.1in Inner Hole: Approx. 2mm / 0.08in Blade Quantity: 4 blades Package List： 10 x Propeller