The ideal sandpaper for tough metals including iron or metal is aluminum oxide, while the top sandpaper for softer metals such as aluminum or brass is silicon carbide. Minimum order for black silicon carbide is really a 25lb box. Wholesale packaging = 300lb drums but will also be packaged in https://www.facebook.com/permalink.php?story_fbid=pfbid09GPb98GUMvvs23eaF8y6hZ6rZPUqwtgmkDWqBFkamS4Sn94ddgtWQoHp39BjceyDl&id=61562415773754&__cft__[0]=AZUSadSISjQpiPbkMpWtdDjVMJE3-LtbMWSAhG2DH7LDvL4zUTJ3FZx8C7Y5qCMoxAISSAC-8wZ2vx9PJq3LDSeuEN4MPsO9lONXV451QVsIUlaJ_53ILxoNJkKdlZK48OGrgSRs7JUUmGrE6g3kmzZEzOqjt5X5R5s_HjzsSQCiaHLt6OtwgllXIMGJ9YRSfV7Ozbr7szXo9L2OShFOukXi&__tn__=%2CO%2CP-R