The Ancient Sinew Wrapped Lamina is an epic-level quiver for hunters. It is the reward for completing a raid level quest. This quest starts with Hastat the Ancient in Felwood and is available to both Alliance and Horde.
Most consider this to be the best quiver in game. However the [Mature Blue Dragon Sinew] needed for the quest takes a lot of farming to get or takes a lot of gold to buy in the auction house. Many people decide to settle for the [Harpy Hide Quiver] availble from the Alterac Valley vendors. It has the same bonus but with 16 slots instead of 18.
With the release of Burning Crusade, Alliance players can now earn reputation with the Kurenai and receive the [Worg Hide Quiver] in Nagrand; horde players can earn reputation with the Mag'har to receive the [Clefthoof Hide Quiver]. These quivers are rare items and have the same stats as the Ancient Sinew Wrapped Lamina.
[Mature Blue Dragon Sinew] needed for the quest takes a lot of farming to get or takes a lot of gold to buy in the auction house. Many people decide to settle for the 
[Harpy Hide Quiver] availble from the Alterac Valley vendors. It has the same bonus but with 16 slots instead of 18.
