Graco J0000018 COUPLING,1 8NPT,SS,OPEN CLOSE VLV 20"x90" The patented air charged drive Size:841 The patented air charged drive allows for the elimination or reduction of pulsation WITHOUT expensive pulsation dampeners or surge tanks 15 Pack 492377 ABRASIVE BACKING Foam ABRASIVE TYPE Discs ADHESION TYPE Hook & Loop APPLICATION Contracting & Remodeling Paint & Decoration Wood Working Brand Festool CONSUMABLE TYPE Sandpaper DIAMETER 5 in GRAIN Silicon Carbide GRIT 4000G MAKE Platin2 PRODUCT TYPE Consumables TOOL SUB TYPE Sanders Rotex Sanders Sanders Random Orbital Sanders TOOL TYPE Sanders GTIN 4014549022573 listed as Ref 17 in the parts diagram