CP-1001-1L  Computer head 9P,plastic traditional shell (long screws)
CP-1001-1S  Computer head 9P,plastic traditional shell (short screws)
CP-1001-2L  Computer head 9P,traditional iron shell (long screws)
CP-1001-2S  Computer head 9P,traditional iron shell (short screws)
CP-1001-3L  Computer head 9P,plastic quick shell (long screws)
CP-1001-3S  Computer head 9P,plastic quick shell (short screws)