Features Precision Engineering Design: Crafted with 120 teeth for optimal performance, ensuring smooth operation and enhancing the efficiency of your industrial robot parts Durable Zinc Alloy Construction: Made from high-quality zinc alloy, this gear offers exceptional wear resistance and strength, guaranteeing long-lasting durability in demanding applications High Rigidity and Accuracy: Engineered for precision, the round hole gear maintains superior rigidity, resulting in a firmer connection and reliable performance during operation Easy Customization: Compatible with broken chain pliers (sold separately), allowing you to easily cut the carbon steel chain to your desired length for versatile applications Versatile Compatibility: Perfectly suited for TETRIX, FTC, FRC, FIRST, WRO, and other global robot competitions, ensuring high durability and performance in competitive environments Features: 1、Made of zinc alloy material, high wear resistance, high strength and high rigidity. 2、The product is accuracy die casting with high accuracy 3、High quality and great processing, which has long service life 4、Unique design makes the gear have better performance 5、Great workmanship, perfect replacement for the old one Specification: Item Type: Round Hole Gear Quantity: 1pc Material: Zinc alloy Number of Teeth: 120 Outer Diameter: Approx. 97.6mm / 3.8in Inner Diameter: Approx. 8.0mm / 0.3in Thickness: Approx. 6mm / 0.2in Weight: Approx. 113.2g / 4.0oz Package List: 1 x Gear Package List 1 x Gear