The Bulk Tak Pak contains 1600 colored Taks, and bastes up to 4 king size quilts. We recommend basting 4 to 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.