Tama Imperialstar Series is constructed of 6 ply, 7.5mm, 100% Poplar shells which offer a full, warm tone combined with medium attack. Poplar wood has been used in making drum shells for over 50 years. A drum's bearing edge is one of the most important components in drum sound. Tama's advanced edge cutting process provides extremely precise bearing edges, which allow these shells to ring openly and fully, and provide a wide range of tune ability, sensitivity and response. All Tama wrapped finishes are glued to the shell 100% to eliminate warping, buzzing or lifting. This process allows the shell to resonate fully and consistently. The Imperialstar Series also features newly designed lugs, Accu-Tune Bass Hoops, Spur Brackets, Ring Mufflers on Bass Drum Heads, Omnisphere Tom Holder System, Eye-Bolet Structured Tom Bracket, and Stagemaster Series Hardware.