This is a cleaning tool for removing debris from the sound ports of your Earasers. There is a brush on one side and a wire loop on the other end. Use the wire loop to scoop out any foreign matter that gets up inside the sound port. Brush away any debris left near the tip of the sound bore with the fine bristles.
Take a close up picture of your ear with a business card placed against your cheek.
Watch this video to see how to correctly find the perfect size.
Drag the box to match the business card. Use the ( - and +) to size the box and use the rotation symbols to align. If your business card does not appear to align with the rectangle, you may need to retake the picture and make sure the business card is perpendicular to the lense.
Drag the respective oval sizing shapes over the ear canal and match the best size.