Features 2.Made of brass material, these acorn nuts are sturdy and durable. 3.Acorn nuts can prevent screw thread from contacting with nearby objects. 4.They can be used as high strength fasteners for machinery, furniture, vehicles, etc. 5.Mainly used on cars, tricycles, electric vehicles to fix tires and axles. Specification Features: Made of brass material, these acorn nuts are sturdy and durable. Acorn nuts can prevent screw thread from contacting with nearby objects. They can be used as high strength fasteners for machinery, furniture, vehicles, etc. Mainly used on cars, tricycles, electric vehicles to fix tires and axles. Specification: Material: Brass Type and Quantity(Optional): M3 20PCS M4 20PCS M5 20PCS M6 20PCS M8 10PCS M10 5PCS M12 5PCS Weight: 28g-121g or 1oz-4.3oz (approx.) Package list: 1 set x Nuts Package List