Features: Effectively increase the height of about 30mm, protect the fuselage from dirt and scratches; Lightweighted and stable to carry the fuselage, hardly affecting quadcopter flighting; Firmly lock the fuselage for stable installation, without affecting the positioning at the bottom of the fuselage; Stability and safety are upgraded, no need to remove when folding and storing the quadcopter, convenient and practical. Adopt quick release folding, quick installation, convenient and practical.