The Yamaha Oak Custom 4-Piece Fusion Shell Pack follows in the footsteps of the Yamaha Birch, Maple, and Beech drum series, Oak offers excellent qualities as a drum shell material. A solid fundamental delivers powerful sound while its character allows for a unique shell size line up. Beautifully grained, this hardwood creates a drum with stunning looks. The bass drum shell is 7-ply while the toms and floor tom shells are 6-ply. Air Seal System for Superior Shells The use of the Air Seal System is in part responsible for the superior quality found in Yamaha drum shells. Select woods are cut into plies, positioned with staggered diagonal seams, and sealed together with evenly distributed air pressure. The resulting shells are perfectly round and of uniform thickness delivering superior tone quality and exceptional durability. Universal Shell Sizes The Oak Custom shell depths are sized in-between Yamaha's jazz depth and power depth drums. The universal size allows for maximum projection while maintaining strong attack. The added depth enhances the oak tone with greater bottom end and more power. Compact Lug Design These newly designed, small, oval-shaped lugs are easily attached to the shell with a single bolt. Small footprints offer minimum lug-to-shell contact allowing the shell to deliver maximum tone. A special nylon insert prevents tension rods from becoming loose during play. Bass Drum Spurs A sturdy hexagonal design and fixed angle position allow Yamaha's spurs to withstand bass drum kicks. Height adjustment and the releasing and retracting of the pointed spur are made easy with a drum key. Mounted Toms and Floor Toms Equipped with YESS Mounts Long found on Yamaha's high-end drum kits, the original YESS (Yamaha Enhanced Sustain System) mounting system is used on all Oak Custom toms and floor toms. This rod clamp system allows attachment of the drum to the tom holder without the need of a hole in the drum shell for the rod to pass through. The YESS clamp is attached to the shell at the nodal point with two bolts so as to allow the shell to vibrate freely without degrading the shell's dynamic range and sustain. The nodal point is the location on a shell with the least amount of vibration allowing for the mount to have minimal effect on the resonance of the shell. Ball Clamp & Triple Tom Holder This round ball clamp is made of super-hard resin. The ball is held firmly in place with a steel plate and large wing bolt. While providing ease of operation, this system also delivers total freedom in positioning with superior stability.Cymbals and hardware not included.