These wheel lug studs are made of carbon steel and tested to demanding automotive industry standards to ensure strength, longevity and safety. Tensile tested - lug studs undergo industry-standard proof-load testing to ensure strength Trustworthy quality - backed by team of professional engineers and quality control specialists in the United States Durable material - carbon steel meets SAE automotive industry standards for strength and hardness Corrosion resistant - extensive salt spray testing helps ensure years of durability against rust Package Dimensions: 3.63 x 2.38 x 2.19 inches Package Weight: 1.5 lb Package Quantity: 1 UPC: 019495610304 Color: Silver Head Diameter: 20.193 mm Material: Steel Package Contents: 10 Studs Quick-Start Nose: No SAE or Metric: Metric Shoulder Diameter: 15.342 MM Shoulder Length (In): 13.487 mm Splined Bore Diameter: 15.926 MM Style: Serrated Stud Thread Diameter: 14 MM Thread Direction: Clockwise (Right) Thread Length (In): 32.893 mm Thread Pitch: 1.5 mm Thread Size: M14-1.50 Under Head Length: 1.811 in Country of Origin: US