The Signature line discs were created by Steady Ed Headrick using exotic materials rooted in the research he did for finding the rubber used in the Superball while he was at Wham-O. The unique plastics are incredibly durable. They bounce off hard objects and grab the chains while absorbing any chain shock. Blowfly I, Blowfly II, Glowfly, Blunt Driver Product Features Convienient Save money Great range of golf discs Convienient 4-packs of our Proline, Signature and RDGA discs. Product Description The Signature line discs were created by Steady Ed Headrick using exotic materials rooted in the research he did for finding the rubber used in the Superball while he was at Wham-O. The unique plastics are incredibly durable. They bounce off hard objects and grab the chains while absorbing any chain shock.The Signature Line Golf Discs 4-Pack includes one of each - Blowfly I, Blowfly II, Glowfly, Blunt Driver. newitem57208420 Online Shopping Deals