Features: Enhanced Performance: Upgrade your mountain bike disc brake system with the bike disc brake rotor adapter for improved stopping power and control on various terrains. Premium Construction: Made of good quality materials the mountain bike six-nail disc brake ensures durability and reliability for a safe riding experience. Lightweight Design: Experience smooth and responsive braking with the six spike ultra light floating brake discs designed for reduced weight and enhanced maneuverability. Easy Installation: Bolts with high hardness make installation a breeze providing secure attachment of the brake discs to your bike without compromising performance. Versatile Compatibility: Suitable for both road bikes and mountain bikes these brake discs feature a smooth surface that won't harm your hands making them ideal for cycling professionals and enthusiasts alike. Specifications: Material: Stainless Steel Diameter: 160mm 180mm 203mm Note: Due to the screen lighting effect the actual color of the product may be slightly different. Due to manual measurement please allow size error. includes: 1* Bike Disc Brake "