Material: Bike pedal extensions are made of high-quality chrome molybdenum steel, waterproof, rust-resistant, and corrosion-resistant, designed for long service life. Protect Crank: The pedal extension helps protect the crank arm and increases the spacing between the pedals. Protective Threads: The crank thread extension 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 cycling. Application: Bicycle pedal extensions are compatible with 9/16 inch threaded pedals, suitable for use on mountain bikes, road bikes, folding bikes, and other bicycle types. Item Type: Bike Pedal Extension Material: Chrome Molybdenum Steel Color: Silver Weight: Approx. 54g (1.9oz) Product Length: Approx. 33mm (1.3in) Product Radius: Approx. 18mm (0.7in) Shaft Core Size: 9/16 inch (14mm) Extended Pedal Shaft Distance: Approx. 20mm (0.8in) Configuration: L for Left, R for Right – sold as a pair (left and right), compatible for stacking if needed Wrench Size: 15mm open-end wrench required for installation Features: 1. Helps protect the crank from damage during pedal changes. 2. Extends the pedal shaft to provide better leverage. 3. Helps prevent shoe-to-crank interference for riders with larger feet. Package Includes: 2 x Bike Pedal Extensions (1 Left + 1 Right)