Pricing mentioned is per piece. Requires a minimum buy of 100 piece(s). Merit Powerlock FX DiscsAluminum Oxide Quick Change DiscsFlexible all-purpose alternative to traditional quick-change discsIdeal for contours or flat surfacesFor weld removal, the most common grist used are 36-50, while 60-120 gris are used for removal of imperfections and blendingWon't gouge your work pieceRolls easily into contoursRemoves machine marks & blends light welds