Premium 7 piece set for Prime bows (black series)pre-stretched and made with our best process. 7 piece sets fit Prime black and nexus series made in 2020-2021. If you are unsure of how many pieces your bow has, just shoot us an email archeryshack@gmail.com Use the boxes to select materials and fill in the box for bow and color info. No upcharge for 1, 2, 3, or pinstripe colors!