Quick Change Screw Fitting Discs For general use including blending welds and removing machining marks. Also suitable for use on mild contours as well as flat surfaces. Quick change screw fitting ensures that the disc is always perfectly centred without adhesive, moving parts or centre screw damage to the workpiece. Higher speeds can be attained resulting in faster stock removal reduced man-hours and increased productivity. Available in two abrasive types, aluminium oxide for general-purpose use and zirconia alumina for grinding and finishing of stainless steel. Available in 25mm, 38mm, 50mm, 75mm and 100mm diameters for the abrasive discs. Also available in a surface preparation material that is designed for smoothing surfaces prior to painting, removing rust, oxides, imperfections and blending out grit disc marks to produce fine finishes on metal. All discs are compatible with 3M ROLOC™ system holders. Zirconia Alumina Abrasive Discs for grinding and finishing of stainless steel.