Fits ICOM older and new models that have 2-pins and 2 locking screws including: F33G, F-51, F-61, IC-3GT, IC-F14, IC-F21BR, IC-F21GM, IC-F24, IC-F3021, IC-F3021T/S, IC-F31, IC-F3GS, ICF4021, IC-F402IT/S, IC-F43GS, IC-F43GT, IC-F43TR, IC-F4G, IC-F4GS, IC-F4GT, IC-V85, IC-F3031S, IC-F3033S, IC-F3036S, IC-3230D, IC-4031S, IC-F4033S, IC-F4036S, IC-F4230D, IC-F1000, IC-F2000.