This LOT is one Matched Pair (total 1 pair, 2pcs) of New Golledge Electronics Ltd. 45.1MHz Crystal Bandpass Filter, Part Number: GMCF-45T152AF in 3-pin through hole package. 3dB Bandwidth 15KHz (+/-7.5KHz). The pair provide 4-pole total and and better stop band rejection can be obtained. Case Size UM-1.3S*2.

Data sheet can be found on datasheetarchive dot com.