Try out each of our core Blackwing pencils before purchasing a 12-pack. The Audition Pack also includes a one-time $10 discount for a future purchase of a 12-pack of our core pencils.HOW IT WORKS:1. Purchase the Blackwing Audition Pack. (Includes 1 x Blackwing Matte, 1 x Blackwing Pearl, 1 x Blackwing 602, and 1 x Blackwing Natural)2. Once you receive your Audition Pack, test them out to see which one is best for you.3. Once you're ready to pick your 12-pack, return to our website to purchase any core 12-pack of pencils and checkout using the email address you used to purchase your Audition Pack. Your discount will be automatically applied. Limit one discount per customer.Learn more here.All Blackwing pencil products conform to ASTM D-4236.