here is the video http://youtu.be/ZeFY-EeXQV0For sale is 1 Neodymium Magnet its 14mm x 3mm the hole is 4mm It is perfect size for a 1/8 rivet to fit inside. They are extremely strong magnets check out the video below. If you would like larger quantities check out my other listings or send me an email. thanks for looking.