Enhance your cycling performance with this high-quality 3 Speed Freewheel, crafted from durable high-strength steel for exceptional hardness, toughness, and resistance to wear and rust. Designed to deliver a reliable and smooth riding experience, this freewheel features a versatile 18, 21, and 24-tooth gear set, adapting to various cycling demands while offering faster acceleration and seamless gear transitions. Key Features: · Premium Steel Construction: Made from high-strength steel material, ensuring outstanding durability, excellent wear resistance, and rust protection for long-lasting use. · Versatile Three-Speed Design: Equipped with 18T, 21T, and 24T gears, this freewheel provides flexible gear options to suit different riding styles and terrains. · Precise English Thread Compatibility: Engineered with standard English thread B1 3.75x24T, specifically compatible with spin hubs for secure and reliable installation. · Smooth and Efficient Operation: The freewheel rotates gently with excellent internal lubrication, enabling powerful, smooth pedaling and an effortless cycling experience. · Accurate Machining and Fit: Manufactured with precise equipment to ensure clear threading and tight integration with the hub, delivering a secure, seamless fit that enhances overall cycling performance. Specifications: · Material: High-Strength Steel · Gear Ratio: 18T / 21T / 24T · Size: Approx. 98 x 98 x 16 mm (3.86 x 3.86 x 0.63 in) · Application: Compatible with Spin Hubs featuring English Thread B1 3.75x24T Package Includes: · 1 x 3 Speed Freewheel This precision-engineered 3 Speed Freewheel combines durability, compatibility, and smooth performance to upgrade your bike’s drivetrain. Ideal for cyclists seeking a reliable and efficient gear component, it ensures enhanced control and comfortable riding on various terrains.