This is one Lot (Qty. 20) of New American Ceramic Technology 100B Serise Porcelain Superchip, 2.0pF, +/-0.1pF, 500V, Surface Mount Ceramic Capacitor, Part Number: ATC100B2R0BW500XT.

Data sheet:

http://www.atceramics.com/UserFiles/100b.pdf