From the Gretsch Drums website:
The Gretsch Renown Purewood Limited series continues in 2012 with American hickory wood. Highly prized for its natural strength and density, hickory is a natural extension for the Purewood series. Tonal properties for the bass drum feature tremendous low end combined with punchy attack. Tom tones have an emphasis on the higher and lower frequencies to produce a focused, lively and controlled sound. The hardness of Hickory produces a solid wood tone and crack in the snare while retaining sensitivity for all styles of playing. Shell interiors are finished naturally and shell exteriors are finished in natural gloss lacquer to enhance the unique visual characteristics of hickory. Production is limited to 35 pieces of each configuration.
100% American Hickory
30-degree bearing edges
Natural gloss with natural shell interior
For more information including additional photos, specs, and how to buy, visit the Gretsch Drums website.