So-called 'Exorcism Crosses' are widely available on the internet1 but sadly are unlikely to be any more effective than any of the other so-called miracle crosses.
A cross used by a priest performing an exorcism rite may be cross especially reserved for that purpose (a Reliquary Cross for example). In this situation it might be referred to as an Exorcism Cross but exorcism is significantly more than just waving a cross around, whatever it may be made of or may contain.
Exorcism is treated with deep scepticism by many churches, including Roman Catholicism, believing it is just an old superstition that has no place in modern society. – A religion must change with the times or be doomed to extinction. Nevertheless it remains a Church rite, albeit rarely used, invariably in private and not a circus performance for the tabloid press.2
Exorcism follows extensive counselling over a period of time. The rite itself is mostly a series of prayers, statements and appeals, where the priest implores God to free the subject from diabolical infestation and also demands, in God's name, that the demon departs from the subject. The rite also includes sprinkling holy water on everyone present, the laying of hands, and making the sign of the cross. A cross, which has been blessed and reserved for the purpose, may be used to touch the subject.3
'Exorcism Crosses' sold online and by gothic jewelry traders often contain images of St. Benedict with the accompanying inscription "Begone, Satan!", but this is in relation to telling the devil not to tempt, rather than the expulsion of evil spirits.
Be aware, however, that these trinkets are not merely useless pieces of junk. They are potentially dangerous in that they delay your correct approach to exorcism, which is to contact a well-trained and experienced priest, ordained and authorised by the Church, and introduced to you by your local priest. Have faith in these experts. You put too much at risk by even considering any alternative.
To repeat our message at the top of this page: If you have toothache, you have a choice: shoot the tooth out with a shotgun, or visit a dentist. We strongly recommend you visit a dentist. If you believe you are being molested by an evil spirits, you have a choice: buy a so-called Exorcism Cross from the internet, or visit a priest. We strongly recommend you visit a priest. Any other attempt will not only fail but make matters worse.