5 pack - 3" x 18" Super Flexible Backed Aluminum Oxide Belts (Best for: Contour)Best for difficult curved contoured applications on a variety of metals Can be used for finishing and polishing stainless steel J weight poly cotton blend backing Dry applications For a cheaper alternative see our Flexible belts Choosing a Grit Coarse Grits (24 80): For heavy material removal, weld grinding, or shaping. Medium Grits (100 180): For blending, deburring, and intermediate smoothing. Fine Grits (240 400): For finishing or preparing for

· Best for wet applications

weld splatter

·         Fine Grits (240-400): For finishing or preparing for polishing

·         Depending on the coarseness of the belt you choose

· For a cheaper alternative see our “Flexible” belts

stone & marble

** Still unsure

· For a more premium alternative see our “Premium Flexible” belts

·         J-Weight if you need flexibility for finishing

·         Dry applications

o   Smoothing welds and seams

or sanding curved surfaces