The Mega Tak Pak contains 10,000 Taks, enough Taks to keep basting up all those unfinished quilt tops for weeks! We recommend basting 4 -6 inches apart. These Taks are designed to work with the QuilTak Quilt Basting Gun. When choosing your color options: clear shows up better on darker fabrics and black and rainbow colors show up better on lighter fabrics. This is useful when removing the Taks from the finished project.