1) After placing an order for a Lyra cartridge from the Needle Doctor's online store, a return authorization number will be generated and emailed to you in the following business days.

2) Needle Doctor will process your order immediately and ship your new cartridge.

3). Send your cartridge to us: Needle Doctor Contact Info and Address
Please write your Return Authorization number on the outside of box.

4). You will be given a two week grace period to send us your old cartridge, after which point we are authorized to bill you the full retail value of the new cartridge.