Congo instrument model Tumba from the Marathon Exclusive product line, which has a diameter of 12 1/2" and a height of 30" (76 cm). The instrument's construction consists of two layers of Siamese oak. The Congo is fitted with a buffalo leather head and SSR-Rims, 2.6 mm thick. The tuning pegs have a thread with a diameter of 8 mm. Surface finish: Natural in a glossy finish. The instrument's hardware is made of chrome. The package also includes a massive, height-adjustable metal tripod stand Steely II Conga Stand in a chrome finish, Conga Savery, accessory bag, L-shaped tuning key and Tune Up oil.