detach or cut with scissors

Barcode printer ribbon ,Almost every metal spool on a typewriter holds onto the ink ribbon with a sharp little metal spearhead that simply pierces the silk and holds onto it that way. When you buy a new compatible printer ribbons like this one, simply roll it all onto one spool, disconnect the ribbon (detach or cut with scissors), and replace the old ribbon with this one by skewering it on the spear instead, going the same way.