Lifting Magnet Maximum Flat Load Capacity 400 lb Maximum Round Load Capacity Not Applicable Minimum Thickness for Activation 3/16 in Minimum Thickness for Maximum Load Capacity 3/16 in Activation Mechanism Pry-Off Handle Magnet Length 3 in Magnet Width 4 1/2 in Magnet Height 1 5/8 in Overall Length 7 1/2 in Overall Width 3 5/8 in Overall Height 5 in Bail Inside Width 2 3/4 in Bail Inside Length 2 3/4 in Handle Length 11 3/8 in Minimum Operating Temperature -148 Degrees F