Electric scooter owners, if you need to replace those tricky brake disc bolts, this set has exactly what you're looking for! These are M5 x 9mm T25 head screws specifically designed for Segway Ninebot and Xiaomi electric scooter brake disc assemblies. Made from high-quality stainless steel, these bolts offer excellent corrosion resistance so they won't rust or seize up, even if you ride in wet conditions. The T25 torx head design provides better torque transfer and reduces the risk of stripping compared to standard hex heads, making installation and removal much smoother. Each bolt weighs about 1.8 grams, so they're lightweight without sacrificing strength - crucial for maintaining your scooter's performance. The precise threading ensures perfect engagement with your brake disc and hub, providing secure mounting without vibration loosening over time. Whether you're doing routine maintenance, replacing worn hardware, or repairing after an incident, having the correct factory-style bolts ensures everything fits and functions perfectly. The package includes 14 bolts, which typically covers most scooter models with some extras for peace of mind. The quality is noticeable - these aren't generic hardware store bolts but specifically engineered for the demands of electric scooter braking systems. If you do your own scooter maintenance or repairs, having a set of these proper brake disc bolts on hand can save you from downtime and ensure your braking system stays safe and reliable mile after mile.