Replaces Needles: GE RS6528, GE EA80X, PFANSTIEHL 509-DS73, PFANSTIEHL 509-DS77, ASTATIC N362-SD Used in: GE C-50, GE C-500, GE C-650, GE EA1013, GE EA80X, GE RS6770, GE RS6527 Used in the following models: GE CC9731, GE CC9931, GE CC9939, GE MC9430A, GE MC9431A, GE MC9432AB, GE RC7431 THRU GE RC8579 (if suffix is A or AB), GE RP2290A, GE RP2291A, GE RP2290C, GE RP2291C, GE CC-9731, GE CC-9931, GE CC-9939, GE MC-9430A, GE MC-9431A, GE MC-9432AB, GE RC-7431 THRU GE RC-8579 (IF SUFFIX IS A or AB). GE RP-2290A, GE RP-2291A, GE RP-2290C, GE RP-2291C, MANY OTHERS Tip Material: .7MIL DIAMOND Tip Radius: .003 Speeds: All Made in USA