This is Dremel's EZ Lock Abrasive Wheels
Compatible with both EZ402 EZ Lock Mandrel and Standard 402 Mandrel The Dremel EZ Lock makes accessory changes easy as PULL-TWIST-RELEASE One-piece mandrel design.
Two Buffs: one Coarse 180 Grit and one Medium 280 Grit
Dremel Mandrel (DRER1315, DRER4930)
Used to refinish furniture, clean grills, remove paint, tarnish and more.