[feature] Keep Your Stationary Bike Safe - This will be your bike trainer's new best friend! The product fits perfectly and compactly on the rear axle of your bike, keeping you upright and stable while riding your bike, avoiding tipping and tipping over. Hassle-Free Setup - Manufactured as a rear wheel replacement string, saving you the time and effort of disassembly and reassembly. You can easily install and remove it anytime! Suitable for both beginners and professional cyclists - the rear axle skewer features a quick release so it locks into place easily. Even beginners can easily set up the bike trainer! It fastens securely so it can withstand the tough training of a professional without breaking. COMPATIBILITY - This skewer is universally compatible with most bike trainers. LONG LASTING MATERIAL – Made of the highest quality alloy known for its high hardness, sturdiness and corrosion resistance. This top-notch bike training string will last a long time without needing to be replaced. It's perfect for any weather or climate and is great for road bikes and mountain bikes alike! [product information] Name: Riding platform quick release lever Material: fine steel Applicable: riding training platform mountain bike bicycle Weight: about 100 grams Rod length: 165mm Color: Silver Packing list (available after purchasing an item): Riding platform quick release lever*1 beg to be excused: 1. Due to the long shipping time, the item may be damaged during the transportation, if the item is damaged, please leave us a message through the official website immediately before leaving a comment, and I will solve the problem for you. 2. Due to manual measurement, the size may have an error of 1-3cm. 3. Color may vary by monitor.