Description: Enhanced Security: This brake button is specifically designed for exercise bikes, allowing for quick emergency stop to ensure your workout security Construction: Made from quality materials, this brake knob is built to last and offers stable performance over extended useResistance Knob: The resistance button allows you to easily adjust the resistance level according to your workout needs, providing a more personalized exercise experienceUser Friendly Design: Featuring a knob design, this Exercise Bike Brake Lever is easy to operate and requires minimal effort for effective brakingUniversal Compatibility: Suitable for all exercise bikes with flywheel friction resistance, making it an ideal choice for enhancing your fitness routine Specification: Material: ABS, Metal Size Chart: Knob Diameter:4.1cm/1.61inchThread Length:5.5cm/2.17inch Package Includes: 1Exercise Bike Brake Knob Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.