I have two crystal ovens. 1)MONITOR PRODUCTS ETA4-8 Octal male socket 28 Volts 70 Deg C 4 1/2 H x 2 L x 1 1/2 W inches HUNT CORP HORII-3 11 pin Male socket ( same as octal with 11 pins) 115 V 75 Deg C 2 1/2 H x 2 L x 2 1/2 D $15 each or $20 for both plus $7 ship. --- Ron