Features. Genuine WhamO Frisbee discs. The discs asked for by name. The Super Flex Fastback has the same great flight of the standard Fastback however it is softer and works great in cold weather. UMax HDX Ultraviolet and Cypher are 10 78D Fastbacks are 9 56D Ring is 11 12D. Ultraviolet model changes color from clear to purple red orange or yellow when exposed to UV light. The Eurablend Frisbee is extra durable for the dog that has a hard biteSpecifications. Capacity 175 g

• Genuine Wham-O Frisbee discs
• The discs asked for by name
• The Super Flex Fastback has the same great flight of the standard Fastback, however, it is softer
• U-Max, HDX, Ultraviolet and Cypher are 10 7/8D, Fastbacks are 9 5/6D & Ring
• Ultraviolet model changes color from clear to purple, red, orange or yellow when exposed to UV

Genuine Wham-O Frisbee discsWham-o