Scotch-Brite™ Roloc™ EXL Unitized Wheel is strong and effective for edge deburring and finishing. Our wheel performs well in a variety of metal working applications and machined parts where close tolerances are important. The Scotch-Brite™ Roloc™ EXL Unitized Wheel TR SB17190 is strong and effective for edge deburring and finishing. It performs well in a variety of metal working applications and machined parts where close tolerances are important. Manufactured with compressed, non-woven fibre construction and uniform grain distribution the Scotch-Brite™ Roloc™ EXL Unitized Wheel produces consistent and professional results for weld polishing, deburring aircraft parts, blending and finishing on a variety of metals, plastics and composites. The EXL material in the higher densities is extremely tough, delivering aggressive cutting power for effective deburring of edges and corners without damaging the part. The lower densities are soft and conformable and work well for finishing contoured surfaces. This disc also features the 3M™ Roloc™ Quick Release System for quick and easy disc changes. Roloc™ discs allow use of both the edge and surface of the wheel without interruption of mounting hardware. Available grades: Medium/Course (aluminum oxide) Fine (silicon carbide). The Scotch-Brite™ Roloc™ EXL Unitized Wheel ranges in density from 2 (soft, conformable) to 8 (hard, aggressive).