For sale is a digital download of the "GPL Models 159, 160, 490, 493 & 638  “RAM CLEAR” Procedure" delivered by .PDF. You will be able to access this file via the link provided to your email address within the invoice received shortly after purchase or by visiting the "my files" section of this website under the “my account” page, provided that you are logged in.  If you have any questions about your order please visit the contact us page.