You are buying 1 piece of Spectrum Control Ceramic Press-in Filter Feedthru Capacitor. These parts are NEW. PN: SCI-9925-122

Specifications:
Value: 1200 pF +100%-0%
Working Voltage: 200V min.
Current Rating: 5A max.
Operating Temperature: -55 degC to +125 degC
Finish: Gold Plated Case and Leads
Mounting Hole: 0.136-0.137" diameter

datasheet can be found here