7-inch Three-Leaf Crossing Machine Screw Blade HQProp DP7X4X3 Plastic Propeller for RC Aviation Model Youth 15-35 Transparent PE Bag 1 Pair
7-inch Three-Leaf Crossing Machine Screw Blade for RC Aviation Models

This 7-inch three-leaf crossing machine screw blade is a replacement propeller for RC aviation models, supplied as one pair in a transparent PE bag. The listed specification is HQProp DP7X4X3, and the colour option is 7040 three-leaf paddle. The blade is made from plastic and is not electric, so it serves as a mechanical part for model assembly rather than a powered component. It is listed as suitable for youth users aged 15 to 35. The source information gives the blade size as 7 inches and the specification code, but no further measurements, weight, or performance data are provided. This compact mode description covers the confirmed details so buyers can check compatibility before ordering.
Features and Construction

The main confirmed details are the 7-inch size, the three-leaf paddle shape, the plastic material, and the HQProp DP7X4X3 specification. These points help identify the blade as a model aircraft propeller rather than a general-purpose screw. The listing also states that it is not electric and that it is supplied in a transparent PE bag.
Material and Build
The propeller blade is made from plastic. In model aviation, plastic blades are commonly used as lightweight mechanical parts, and this listing gives no additional material claims. The three-leaf paddle design is stated as part of the colour option, and the crossing machine screw blade type is named in the product title. No hardness, flexibility, or impact ratings are provided in the source text, so the build description is limited to the stated plastic material and the blade format.
Size and Practical Fit
The blade size is 7 inches, which is the only measurement given in the source information. The specification is HQProp DP7X4X3, and this code should be checked against your model's requirements before purchase. The product is listed for youth users aged 15 to 35, which indicates the intended age group for handling and use. No shaft diameter, pitch, or weight figures are supplied, so fitment should be confirmed using the 7-inch size and the specification code.
Uses and Placement

This item is categorised as an aviation model part, so its main use is in RC model aircraft assembly or repair. It is not electric, meaning it does not include a motor or power source. The transparent PE bag packaging keeps the pair together for storage or transport before fitting.
Event or Professional Use
For hobby clubs, flying sessions, or model workshops, a spare pair of propeller blades can be useful when a blade needs replacing. The 7-inch size and HQProp DP7X4X3 specification make it easier to match the part to a compatible model. The listing does not state any competition approval, thrust data, or speed rating, so it should be treated as a straightforward replacement part rather than a performance upgrade.
Everyday Home Use
At home, the blade can be kept as a spare for an RC aviation model. The plastic material and non-electric design mean it is a simple mechanical part with no wiring or batteries. The pair is supplied in a transparent PE bag, which helps keep the blades together and visible. No special storage conditions are stated, so keeping them in the bag until needed is a practical approach.
Benefits and Buying Value

The buying value comes from having a pair of replacement blades with a stated size and specification code. The plastic construction and non-electric format keep the part focused on its role in model assembly. The listing does not include price comparisons, longevity claims, or performance guarantees.
Reuse and Low Maintenance
As a mechanical plastic part, the blade can be reused while it remains in suitable condition. The source text gives no cleaning or maintenance instructions, so only low-risk handling advice applies: keep it in the supplied transparent PE bag when not in use and avoid bending it during fitting. No lifespan or wear rate is stated, so replacement timing depends on your own inspection of the part.
Why Choose This Product
Choose this item if you need a 7-inch three-leaf crossing machine screw blade with the HQProp DP7X4X3 specification. It is made from plastic, is not electric, and is supplied as one pair in a transparent PE bag. The listed age range is youth 15 to 35, and the colour option is 7040 three-leaf paddle. These confirmed details allow you to check compatibility before ordering without relying on unsupported claims.

