Brother CE-5000 spool pin retractable #XC8701021. Price includes shipping. Should work on other Brother models including:
CE-4000, CE-5000PRW, CS-100, CS-770, CS-4000, CS6000, CS6000i, CS6000T , BC2100 , BC2300, BC2500 , RS240, RS260, ES-2000, ES2400, ES2200, ES2410, ES2010, ES2420, ES2210, HS-2000, LS-30, LS-2020, Comfort 40E, Comfort 60E, ES2020, CS100T, ES2220, SQ-9000, XR9500PRW