My brushes are custom mix of different components gathered over the years. Here's all you need to get that to work.
Instructions for installing those brushes in Sai 2:
1. Copy the files into the respective folders in your SAI 2 directory. The folders in the .rar file are named accordingly to help you.
2. Turn on SAI 2 and set up the brushes accordingly with settings provided in the screenshots.
Please mind I am using SAI2 Preview.2018.12.23 version, if you are using newer version or SAI 1, I can't help you with their installation. You're welcome to try and troubleshoot it yourself, and if you manage to do so, DM me on Instagram! I'd love to include the instructions here in the description