Check the listing for details. 10/20/30/40Pcs 64GB TF SD Cards Flash Memory. Condition: Used. Listed at 26.81 USD. Regarding the brand issue, as these hard drives are recycled by us, we are unable to choose the brand. Meanwhile, we will conduct regular testing to ensure smooth operation. We cannot control the speed. Different brands have different speeds, which is why our prices are very cheap. It will be sent randomly, we cannot decide. This means that if you have high requirements for the speed of memory cards, please purchase them with caution.If you have requirements for speed or brand, we may not be able to meet them as they are determined by price, but we will monitor the quality very well. Therefore, as an honest seller and merchant, I hope you are aware of relevant matters in advance. Although we cannot guarantee the brand and speed, we guarantee that the product can operate normally and meet your normal work needs! 1. The memory card has been fully tested and can be used with confidence. 2. Our factory has many years of experience and will strictly control product quality. 4、Random Brand Send.