Brass Acorn Nut Kit Dome Head Cap Hex Nuts Set Vehicle Fasteners (M6, 20pcs) 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 M3     20PCS M4     20PCS M5     20PCS M6     20PCS M8     10PCS M10    5PCS M12    5PCS Weight: 28g~121g / 1oz~4.3oz (approx.) Package list: 1 set * Nuts