In our upright Damper Felt Kits we supply all your damper felt and treble felts you will need to replace a full damper tray. All you need is PVC-E glue or hyde glue for application | Includes 15x Bass UniChord Dampers, 20x BiChord Dampers, 8x TriChord Dampers and 1x Set of Tapered Damper Wedges.