Crafted From High-strength Iron, This 42mm (approximately 1.65-inch) Metal Golf Tee is Designed for Players Seeking Precision & Durability. the Core Material Undergoes Advanced Rust-resistant Treatments, Such as Electroplating or Protective Coatings, to Prevent Corrosion in Humid Conditions & Ensure Long-term Performance. Its Smooth Surface, Achieved Through Cnc Machining & Polishing, Minimizes Friction with Golf Clubs for Seamless Swings While Maintaining Structural Integrity. Functionally, the 42mm Length Offers Universal Stability, Supporting Consistent Ball Placement to Reduce Deviation & Maximize Driving Distance & Accuracy. the Tees One-piece Molded Construction Enhances Bend Resistance, Allowing It to Withstand Repeated High-impact Strikes on Hard Surfaces