Home Amazon Goldbox deals Amazon: 3M Grinder 28824, T27 4-1/2 in, 5/8-11 External 1.5 hp Amazon Goldbox deals Amazon: 3M Grinder 28824, T27 4-1/2 in, 5/8-11 External 1.5 hp By ARCOM - 6 February 2017 321 0 SHARE Facebook Twitter Amazon Goldbox Deal: List Price: $1363.64 Deal Price: $855.10 You Save: $150.90 (15%) 3M Grinder 28824, T27 4-1/2 in, 5/8-11 External 1.5 hp Expires Feb 27, 2017