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.&Nbsp; 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.&Nbsp; 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.