The RL2962 is a 2" x 1.5" thermal label on a 3" core with an 8" outer diameter which can be used in Zebra models that take 3" cores. This product, RL2962, is available in both direct thermal and thermal transfer materials, both offer permanent and removable adhesive options. If using a printer with a thermal ribbon, make sure to choose one of the thermal transfer options. Below is a link to our thermal transfer ribbons for your review. You'll be able to see the compatible models listed on each product page. https://www.onlinelabels.com/uses/thermal-ribbons