Mountain bikers and electric bike owners, listen up! These disc brake pads deliver reliable stopping power when you need it most. Specifically designed for BB5 and M446 brake systems, these resin semi-metal pads provide excellent braking performance in both wet and dry conditions. The semi-metal composition offers great heat dissipation and wear resistance without damaging your brake discs. You get four complete pairs in the package - that's eight individual pads total - which means you'll have plenty of replacements on hand. The installation is straightforward and they work quietly without producing annoying squealing sounds during use. Perfect for amateur riders and professionals alike, these pads deliver consistent performance whether you're tackling steep downhill sections or navigating city streets on your e-bike. The reliable braking gives you confidence to push your limits while maintaining control. Keep your bike stopping smoothly and safely with these quality replacement pads that won't break the bank. Because when you're flying down a trail or navigating traffic, you want brakes you can count on every single time.