52T Steel Sprocket The 52T sprocket is made of high-strength steel, ensuring stable and reliable pedaling power for e-bikes and commuter bikes. Double-Layer Chain Guard This crankset features a lightweight, double-layer plastic chain guard that prevents chain slippage, protects clothing from oil and dirt, and enhances safety and style. Alloy Crank Arms The 170mm aluminum alloy crank arms combine lightweight strength, rust resistance, and stability for consistent power transmission on long rides. Wide Compatibility Designed for single-speed and 6/7/8-speed configurations, it's suitable for e-bikes, folding bikes, and city commuter bikes. Easy to install and replace, it's a versatile and practical upgrade. Lightweight and Practical Weighing only 0.85 kg (1.87 lb), this crankset is compact and durable, offering both strength and portability for daily commutes and long-distance rides. Package Contents 1 x Grundig 52T crankset with double chain guard