Enhance your mountain bike’s performance with this premium MTB Bike Hub Towers Base, specially designed for 8/9/10 speed cassette flywheels. Crafted from high-quality chrome molybdenum steel, this durable hub base undergoes forging and high-temperature heat treatments to ensure exceptional strength and smooth lubrication, delivering long-lasting reliability and optimal riding efficiency. Key Features: · Compatible with 8/9/10 Speed Cassette Flywheels: Perfectly engineered to fit standard 8, 9, and 10 speed cassette flywheels, while 7-speed flywheels can be used in conjunction with washers (not included) for versatility. · Superior Material & Construction: Made from robust chrome molybdenum steel, forged and heat-treated for enhanced strength, wear resistance, and excellent lubricity, ensuring durability under demanding riding conditions. · Eliminates Wheel Idle Slippage: Designed to effectively solve the common problem of wheel idle slippage, saving you from costly hub or wheel replacements by providing a reliable and economical repair solution. · Multiple Structure Options: Available in several tower base structures including Locking-Teeth Ball Type, Locking-Teeth Bearing Type, Plum Flower Ball Type, and Plum Flower Bearing Type, allowing you to select the perfect fit for your bike’s specifications. · Easy Installation: User-friendly design enables quick and straightforward installation, making it a convenient upgrade or replacement part for your bike maintenance needs. Specifications: · Color: Black · Material: Chrome Molybdenum Steel · Speed Compatibility: For 8/9/10 Speed Cassette Flywheels (7-speed requires washers, not included) · Types & Weights:  – Locking-Teeth Ball Type: 173g / 6.1oz  – Locking-Teeth Bearing Type: 172g / 6.1oz  – Plum Flower Ball Type: 181g / 6.4oz  – Plum Flower Bearing Type: 179g / 6.3oz Package Includes: · 1 x MTB Bike Freehub Tower Base Upgrade your mountain bike with this sturdy, high-performance hub towers base to ensure smooth gear transitions and reliable wheel function, making it an essential component for avid cyclists seeking quality and value.