The SL is a fast, dependable disc with a long straight flight and excellent glide. This disc can add measurable distance to your drives. With its quickness, slight high speed turn, long glide and low fade, the SL will fly a long way. The Pro version is called the Pro Starfire. 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.