The JK (Juliana Korver) Aviar is made from the driver mold in a special blend of durable Pro-line Plastic that is more flexible and grippier than the other Aviar models. It has the same flight characteristics as the KC Aviar. Its softer plastic is better in colder climates and for those who have dry hands and require a tackier grip. Factory Seconds give you the opportunity to purchase blemished discs at a discounted price. Factory Seconds are cosmetically flawed discs that did not meet our quality standards for regular production. The flaws do not affect flight characteristics or durability of the disc. The flaws can be one or more of the following: misprinted stamp, bubbles in the rim, or specks in the material. Factory Second orders are subject to availability.