The Concert Series Timpani Mallets are constructed of 5/8? cherry handles which are hollowed out at both ends to simulate the feel and balance of a bamboo handle. The five cartwheel style models feature wooden cores woven felt liners and the highest quality German felt covers while the CT-6 Ultra Staccato model has a hard felt core for increased articulation. Features: 5/8 Cherry wood handles in a rich dark stain Partially hollowed handles create the feel and balance of bamboo mallets Wood Cores on the five cartwheel models (CT-1 CT-2 CT-3 CT-4 CT-5) Hard Felt Ball on the Ultra Staccato model (CT-6) Woven felt liners High quality German felt covers