HF3030BK Boston humbucker frame HF3030IV Boston humbucker frame HF5050BK Boston humbucker frame HF5050IV Boston humbucker frame HFS3050BK Boston humbucker frame HFS3050IV Boston humbucker frame HFS5070BK Boston humbucker frame HFS5070IV Boston humbucker frame HFS7090BK Boston humbucker frame HFS7090IV Boston humbucker frame HFS110120BK Boston humbucker frame HFS110120IV Boston humbucker frame HCS3050BK Boston humbucker frame HCS3050IV Boston humbucker frame HCS5070BK Boston humbucker frame HCS5070IV Boston humbucker frame HCS7090BK Boston humbucker frame HCS7090IV Boston humbucker frame HCS100110BK Boston humbucker frame HCS100110IV Boston humbucker frame HPF-02-SBK Boston pickup ring HPF-02-TBK Boston pickup ring HPF-02-SCR Boston pickup ring HPF-02-TCR Boston pickup ring HPF-04-SBK Boston pickup ring HPF-04-TBK Boston pickup ring HPF-08-TBK Boston pickup ring HPR-08-SBK Boston pickup ring HPR-08-TBK Boston pickup ring HPR-08-SCR Boston pickup ring