DISCO PULIR ALUMINIO 7 X 1/8X7/8 The Challenger II grinding blending wheels have an aluminum oxide grain and a dimpled honeycomb pattern on the face for greater cooling and longer life. Grind and blend welds in one step. Ideal for grinding radius and contours in pipe and vessels. Contaminant free and safe for use in the nuclear industry. Type 29 shape allows easy control in grinding and blending applications. Must be used with a backing pad. One backing pad and one 5/8-11 nut are included in each box. For additional pad assemblies see part numbers SAI95245 for 4-1/2 and 5 or SAI95247 for 7. Used for metal, stainless steel, aluminum and concrete. Package of 25. *Note: 20% restock fee on all SAIT/United Abrasives returns. Type 29 shape allows easy control in grinding and blending applications Honeycomb, dimpled pattern on face allows for greater cooling and longer life Grind and blend welds in one-step, no need for multiple steps and products Ideal for grinding radius and contours in pipe and vessels Each box of 25 is supplied with a backing pad and one 5/8-11 nut. Additional pad assembly: 4-1/2" & 5" - part #95245 7" - part #95254 CHALLENGER II™ – TYPE 29 Aluminum oxide grain Open pattern on wheel for cool grinding and blending Contaminant Free – Safe for use in the nuclear industry Use for longer life in aggressive applications Must be used with backing pad (one included in each box) SDS Download the SDS: ENGLISH