Here are specificatiosn for the Yamahg GB1 Grand Piano
Designed and crafted by Yamaha
Soundboard: Spruce
Soundboard Ribs: Spruce
Back Posts: 3 – Merkus Pine
Bridge Construction: Two-piece separated
Frame: V-Pro Vacuum Shield Mold Process
Key Material: Seasoned spruce
White Key surfaces: Acrypet™
Black Key surfaces: Phenolic resin
Fallboard: Soft close
Pedal: Shift/Bass Sustain/Damper
Caster: Single-wheeled solid brass casters
Weight: 574 lbs (261 kg)”