Welcome to our shop! This 4 Blades Propeller is designed with high wind and thrust, ensuring excellent performance. The propellers have a 2mm inner hole, making them suitable for motor shafts with a diameter of 2mm. Made of durable ABS plastic, these propellers are resistant to impact and abrasion, and they will not easily deform even after long-term use. You will receive a set of 10 propellers, each with 4 blades. These propellers are small in size, easy to install, and do not take up much space. They are commonly used in DIY toys, such as remote control boats and power car models. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service. Item Type: 4 Blades Propeller Model: XR-150 Material: ABS Purpose: Suitable for DIY toy accessories remote control car model Outer Diameter: Approx. 100mm / 3.9in Inner Hole: Approx. 2mm / 0.08in Blade Quantity: 4 blades Quantity: 10 propellers