Spring retainer pack of 10 for KT88/6550Spring retainer pack of 10 for KT88/6550. €15.99 Includes 25% VATIn stockAdd to cartProduct OverviewShip worldwideSpring retainer pack of 10 for KT88/6550Spring Tube Retainer for 6550 / KT88, nickel finish with silicon dampener.SpecificationManufacturerTube Amp DoctorCategoryTube retainersSKUTR-L-P10In stockAdd to cartSpring Tube Retainer for 6550 and KT88€1.78 Includes 25% VATIn stockAdd to cartRT782 TAD 6550A-STR Blackplate Matched Tube Pair€164.94 Includes 25% VATSoldKR Audio KT88 tubes matched quartetSold12AX7CZ Ruby Tubes Highgrade Selected tube