These wheel lug studs are made of carbon steel and tested to demanding automotive industry standards to ensure strength, longevity and safety. Durable material - carbon steel meets SAE automotive industry standards for strength and hardness Trustworthy quality - backed by team of professional engineers and quality control specialists in the United States Corrosion resistant - extensive salt spray testing helps ensure years of durability against rust Tensile tested - lug studs undergo industry-standard proof-load testing to ensure strength Package Dimensions: 4.81 x 3.63 x 2.20 inches Package Weight: 1.98 lb Package Quantity: 1 UPC: 019495031031 Color: Silver Head Diameter: 20.83 mm Material: Steel Package Contents: 10 Studs Quick-Start Nose: Yes SAE or Metric: Metric Shoulder Length (In): 0.638 in Splined Bore Diameter: 0.623 IN Style: Serrated Stud Thread Diameter: 14 MM Thread Direction: Clockwise (Right) Thread Length (In): 31 mm Thread Pitch: 1.5 mm Thread Size: M14-1.50 Under Head Length: 2.575 in Country of Origin: US