Enhance your mountain biking experience with this high-quality 8-Speed Bicycle Cassette Freewheel, expertly crafted from high-strength steel using advanced hardening technology. Designed for durability and superior wear resistance, this cassette freewheel features a hollow-out design that reduces weight, making installation and use effortless while maintaining robust performance. Key Features: · Durable High-Strength Steel Construction: Ensures exceptional resistance to wear and impact, providing long-lasting reliability for your bike. · Advanced Hardening Technology: Enhances strength and toughness, allowing the cassette to withstand rigorous riding conditions. · Hollow-Out Lightweight Design: Reduces overall weight without compromising structural integrity, making installation easier and improving bike performance. · Strong Oxidation Resistance: Special surface treatment prevents rust and corrosion, extending the storage life and maintaining optimal function. · Unique Mountain Bike Chain Gear Design: Precisely engineered tooth profile (11-13-16-22-28-34-40-46T) delivers smooth and accurate speed shifting, allowing you to maintain better control on varied terrains. · Direct Replacement: Professionally manufactured to fit models Tx35/M310 (requires use with Tail Hook Extender), making it a perfect upgrade or replacement for worn or broken cassette freewheels. Specifications: · Item Type: Bicycle Cassette Freewheel · Model: 8 Speed 46T · Material: Steel · Tooth Configuration: 11-13-16-22-28-34-40-46T · Color: As Picture Shown · Weight: Approx. 566g · Fitment: Compatible with Tx35/M310 (Tail Hook Extender required) Package Includes: · 1 x 8-Speed Bicycle Cassette Freewheel This steel 8-speed cassette freewheel combines durability, lightweight design, and precise gear shifting to elevate your mountain biking performance. Ideal for riders seeking a reliable and long-lasting replacement or upgrade, it offers smooth gear transitions and strong resistance to wear and oxidation for an extended service life.