• 【Chain Drop Prevention】Specifically designed for single-speed mountain and dirt jump bikes with M10 rear derailleur hanger mounting holes to effectively prevent chain dropping during rides.
• 【Premium CNC Construction】Crafted from high-quality aluminum alloy and stainless steel with precision CNC machining for exceptional durability and lightweight performance.
• 【Adjustable Dual-Screw System】Features flexible adjustment with dual-screw fixing system and multi-position tension adjuster to accommodate different chain lengths and torque requirements.
• 【Optimized Spring Design】Angled stainless steel spring design ensures tight fit with the derailleur hanger for smooth operation and enhanced single-speed riding stability.
• 【Complete Hardware Kit】Includes aluminum alloy tension adjuster, stainless steel shaft, and hanger adapter components to meet various installation requirements.

Specifications:

• Material: Aluminum Alloy + Stainless Steel
• Main Body Dimensions: 100 x 26.5mm
• Mounting Interface: M10 Threaded Hole
• Weight: 112.1g