Large, Strong 66mm (just over 2 1/2") Magnets. I also do a very popular smaller 36mm, 7.2kg / 16lbs magnet. Magnet Safety. The actual pull strengths will vary depending on other variables such as: Steel thickness (the thinner the steel the lower the pull strength), Steel shape & flatness, Steel Quality (for example pitted/corroded), Surface finish (painted, powder coated will result in a reduced pull force).
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