When you are using interchangeables and want to harvest your needles from an incomplete project, make note of where you are with a Works in Progress tag. Write needle size, project name and row/round number; slide tag onto cord and secure with an end button. Tags make it so easy to pick up that project again. Reusable if you write in pencil. Each tag is 2" x 3 1/4". 6 per pack.