Latest reviews about Lincoln Electric GRINDING WHEEL 4-1/2&#34X1/4&#34 - 7/8&#34 ARBOR TYPE 27 (1 PACK) http://www.mysears.com/Lincoln-Electric-GRINDING-WHEEL-4-1-2-amp-34X1-4-amp-34-7-8-amp-34-ARBOR-TYPE-27-1-PACK-reviews