Material: Bike pedal extenders are made of high-quality chrome molybdenum steel, waterproof, rust-resistant, corrosion-resistant, and designed for long service life. Protect Crank: The pedal extender helps protect the crank arm and increases the spacing between the pedals. Protective Threads: The crank thread extender features additional protective threading to help prevent damage to the crank during pedal replacement. Improved Performance: Increasing the distance between the pedals can help reduce knee discomfort during骑行. Application: These bicycle pedal extenders are compatible with 9/16 inch threaded pedals, suitable for use on mountain bikes, road bikes, folding bikes, and other standard bicycles. Item Type: Bike Pedal Extender Material: Chrome Molybdenum Steel Color: Silver Weight: Approx. 54g (1.9oz) Product Length: Approx. 33mm (1.3in) Product Radius: Approx. 18mm (0.7in) Application: Compatible with mountain bikes, road bikes, folding bikes, and similar bicycles Shaft Core Size: 9/16 inch (14mm) Extended Pedal Shaft Length: Approx. 20mm (0.8in) Configuration: L for Left, R for Right – includes a pair of left and right shafts (shafts can be stacked if needed) Locking Method: Requires a 15mm open-end wrench Features: 1. Helps protect the crank from damage when changing pedals. 2. Extends the pedal axle to provide better leverage. 3. Helps prevent shoe-to-crank interference for riders with larger feet. Package Includes: 2 x Bike Pedal Extenders