4 Pin White Ceramic Tube Base With Nickel Plated Pins 300B, 2A3, 5Z3, 811, #4102
$1.99
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White ceramic 4 pin tube base. Nickel plated brass tube pins. Outside diameter 1.375", inside diameter 1.120", height 1.125". Great for replacing broken bases on old tubes or for making your own 300Bs, 2A3s, four pin rectifiers etc. Brand new base Made In China.
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