MMF 5312726AA07 Self - Locking - Red Octagonal - Key Tags 1 - 20 - Packed 20 Per Pack Feature self - locking brass key holder to permanently hold original keys. Sturdy&#44; hook - style&#44; plastic key tags are 1.25 in high and feature self - locking brass key Designed to work with the dupli - key system&#44; attach your master keys to red octagonal - shaped&#44; Packed 20 per pack. Imprint plain - non - imprinted.