1. Add 2 Sets (or more - OK to Mix and Match) of D'Addario EXP Acoustic Guitar or Electric Guitar Strings to your cart
2. Click "Checkout" to advance to the shopping cart page
3. The shopping cart will automatically apply the discount.
Buy 1, Get 1 Free; Buy 4, Get 4 Free; etc. There's no limit!
* This promotion may not be combined with other coupons
Free set(s) is of equal or lesser value