A 4-blade propeller set (2pc set model 5045) is a set of two propellers with four blades each, designed for use in a specific model of drone or other aerial vehicle. The model 5045 designation indicates that these propellers are designed to fit a specific type of motor or shaft size. The four blades provide increased stability and lift, allowing the drone to carry heavier loads or fly in more challenging conditions.

This propeller set is widely used in DIY drones and hovercrafts.