Model: A06443_ANTIQUE Metal Kilt Pin Claymore Sword Design Silver Finish Size approx. 3.75'' / 9.5cm Claymore Sword Kilt Pin in Chrome. The kilt pin is a piece of jewellery that is usually worn on the lower corner of the outer apron of a kilt. Its function is to prevent the apron falling or blowing open, by securing the outer apron.