BG-150 Fits the following:

DPA 4017, Panasonic AG-DVC200, AG-MC200, AJ-D700, AJ-MC-900G, DV 200, DVC-Pro400, MC700P, WM-L30, Audio Technica AT-4081, AT-875R, ATR-55, ATR-6550, Schoeps CMIT 5U, Edirol CS-50, Sony DSR PD-150, DSR-250, DSR-500, DSR-PD-170, ECM-673, ECM-674, ECM-680, ECM-6805, ECM-CG-1, ECM-HG21, ECM-NV1, ECM-PS1, ECM-XM1, HDV-Z1U, HVR-HD1000E, Azden ECZ-990, SGM-PDII, SGM-X, SMX-10, JVC GY-HM790, Fostex MC32, Sennheiser MKE 400, MKE 600, Rode NTG-4, VideoMic, Polsen SCL-1075, Shure VP82, Vidpro XM-55,

And most Shotgun type microphones with a diameter of .75” (19mm) and a port tube length of 4.5” (114mm).