These small cutting discs use the Dremmel quick change system and work really well and are good value for money for a pack of 10.
I did however have trouble getting the discs out of the plastic holding pack until I realised you had to remove all of the excess plastic on the disc dispenser as the picturedirections seemed rather unclear. Once that was done it was easy to get them out one at a time, keeping the other discs safe and ready for use as well.