This auction is for THREE (3) sets of  new replacement solid state direct plug-in tubes for the 5U4 and 5R4 rectifier tubes used in the Collins 516-F2 power supply ( 3 each 5U4 and 3 each 5R4 = 6 total tubes). They run very cool and are more efficient than the glass tubes. I will accept returns with-in  30 days as long as they were not taken apart. abused, broken. or modified in any way and you will be charged a $5.00 restocking fee + your return shipping costs. You will receive 3 solid state 5U4 and 3 each 5R4 solid state equvalent tubes.  

PLEASE READ: Due to the rising cost of gasoline prices, and the fact that my nearest carrier is the USPS Office located over 17+ miles one way, parcels will be sent out only ONE DAY per week starting on August 1/2022.  This applies to all parcels sent by USPS, UPS, FEDEX, or any other carrier. Orders must be received by Thursday midnight to be shipped on the following Saturday. All orders received after Thursday midnight will not be shipped until Saturday the following week. Holidays, other carrier closedowns, or any related vendor problems (sickness, floods, fires, or vehicle, to name a few) could cause further delays in the shipping process.

I ship via FREE FIRST CLASS shipping to lower 48 states to retain my prices at 'ROCK BOTTOM"!  IF YOU DESIRE PRIORITY 3 DAY SHIPPING PLEASE NOTIFY ME AND I WILL REQUEST AN ADDITIONAL $4.00 THRU PAYPAL FOR THE PRIORITY EXTRA CHARGE. 

RETURNS WILL BE CHARGED A 10% RESTOCKING FEE. NO REFUNDS WILL BE ISSUED IF THIS  PRODUCT SHOWS ANY EVIDENCE OF TAMPERING OR BROKEN SEALS.

NOTE: OVERSEAS SALES AT YOUR OWN RISK DUE TO ITEMS BEING LOST OR STOLEN.