The Black Label Chalkboard Labels - Perfect Mason Jar Labels Made in USA (48) Easy to use, peel and stick, removable chalk labels. You can use liquid chalk, regular chalk etc, need to change the label just wipe it off! Perfect size for mason jars 2.5" x 1.5" Great for party cups, labeling canned foods, labeling boxes or whatever you need to label! Made in USA by a Veteran owned family business!