[We have a used Pearl Reference snare drum with an extra-thick 20-ply shell, which was sadly discontinued!] A 20-ply (25mm) ultra-thick, powerful shell made from a mix of maple and birch. <Reference> The Reference snare drum has an ultra-thick composite shell with 14 plies of maple on the outside and 6 plies of birch on the inside, for a total of 20 plies, and is heavy-duty to balance the power and sound pressure of the Reference set. However, it also features a sharp 45° bearing edge, which gives it excellent response with a sharp edge. These models feature Mastercast hoops, the revolutionary Glide Lock strainer, and Ultra Sound Snappy (D-type). Diameter x Depth: 14 x 5 Shell: 25mm Maple (14-ply outer) Birch (6-ply inner) Finish: #832 Sapphire Blue Sparkle Hoop / Number of Tensions: MasterCast Die-Cast /10 (DC-1410/DC-1410S) Lug/Bolt: BRL-55 / SST-5047 Strainer: SR-1000 Glide-Lock Snappy: SN-1420D Ultra-Sound D-Type Drum head (striking surface): Remo Striped Coated *Please note that this is a used item and may have minor scratches, stains, dents, and other signs of use.