DJI Quadcopter Multicopter Landing Gear 7mm-10mm Tube High-quality Professional Protective Set Skid Foam Protector Sponge Absorber Anti Vibration Cover (Red + Black, 64mm) 4 Pcs Fit 7mm-10mm diameter landing gear tube Outer diameter (mm): 23; Inner diameter (mm): 7; Length (mm): 64; Weight (g): 4.8 (single) Material: Sponge; Color: Black + red Help prevent rough landings. Make landing more easily and safely Package includes: Sponge Protective Cover x 4