Filter for Xtreme Dynabrade Sanders (models X51, X52, X61). These filters catch the excess oil/dirt/dust that the sanders may spit out while being used. They also double as mufflers that dampen the sound from the exhaust. Sanders take 4-5 of the filters each and need to be changed out when they turn black (about every two months of regular weekly use). 30 filters per bag, sold per bag.

30 FILTERS PER BAG, FULL BAGS ONLY.
4 TO 5 FILTERS NEEDED EVERY TWO MONTHS FOR
REGULAR USE OF SANDER.