Tektro brake pads are sort of a copy of the Shimano pad. The pad that we use in our e-bikes is our A10.11 model Tektro brake pads. This brake pad it's partially centered, which means it has some metal in the compound. You can either get centered or organic pads from Tektro. The organic pads are primarily made of resonant organic particles. Those tend to wear out a little quicker, but they don't tend to squeak as much. The centered pads, they're embedded with little bits of metal. They tend to get a little bit of surface rust on them and the brake rotor gets a little surface rust on them. So you could get a little bit of squeaking with a centered pad, or sometimes a lot of squeaking. However, centered pads do last quite a bit longer, and they have a much more positive feel at the brake lever when you're hitting the brakes.