That is a great question. My understanding is it changes throughout the month. I would call them directly an assk
Holliday weekends That's when they have 50% off parts
Discount days are random. You can sign up at any location to be a 'toolkit member', then set up alerts so that you get email reminders for discount days and special events for members only. Way cool! Be sure to do it.
Probably better to call them and ask! Discounts are awesome great deals.. totally worth it! Good luck
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