GDOOL 8PCS Flange M4 Lock Nuts Serrated Nylon Self-Tightening Aluminum M4 Wheel Hardware for Axial HPI TLR ECX Model RC Car Vehicles Upgraded Replacement Parts -Dark Blue-

Here are the Reason Why Choose Our 4mm Wheel Lock Nuts? Made of high-quality aluminum alloy material, the surface is anodized, corrosion-resistant, prolonged service life and more durable.100% brand new. CNC precision machining, the base of Serrated threads is clean and smooth. Increased strength and precision. Easy upgrade from the original part. The nylon inserts ensure your wheels stay connected to the vehicle under the harshest conditions. Compatible with: RC Models Cars, FPV Drone, Aircraft, etc. Features: Hex:7mm Thickness:5.5mm Hole Diameter: 4mm Outside Base Diameter: 9mm Material: aluminum alloy; Nylon Package Include: 8PCS M4 Lock Nuts Color: Dark Blue