Cary 23mm ID 5mm Thickness Tube Dampers Silicone O-ring Amp For Shuguang 6V6GT 6SN7 6SL7 GZ34 10pcs Condition: New Quantity: 10 pieces For Shuguang vaccum tube 6V6GT 6SN7 6SL7 GZ34 ID: 23MM Thickness: 5MM