Uni-frame support structure is formed combining one and one-half inch by four and one-half inch solid hardwood cross-members interlocked by heavy gauge steel bracketing. Our uniform integral support system was engineered with strength and longevity in mind. Solid hardwood cabinets are reverse-grained and laminated to resist the natural tendency of wood to warp or twist. The finest slate is carefully selected. One inch three-piece oversized slate is featured on every model; it is matched, registered, and diamond-honed for a perfect playing surface that meets or exceeds BCA specifications. Accu-Ball Control cushions are k-66 tournament grade cushions formulated to respond consistently to ball momentum with dynamic accuracy! Rails are produced with a machine-stabilizing ridge to precisely align the cushions deliver consistent performance.Solid Hardwood sub-rails are designed to deliver optimal ball response. They are reverse-grained and laminated to add weight and density, thus resisting the ball's impact and allowing for the cushion to absorb and react to the energy transference