Lifting Magnet Maximum Flat Load Capacity 250 lb Maximum Round Load Capacity 125 lb Minimum Thickness for Activation 1/4 in Minimum Thickness for Maximum Load Capacity 3 in Activation Mechanism On/Off Handle Magnet Length 3 5/8 in Magnet Width 2 5/8 in Magnet Height 2 5/8 in Overall Length 5 in Overall Width 2 5/8 in Overall Height 6 5/8 in Bail Inside Width 1 1/2 in Bail Inside Length 1 3/8 in Handle Length 4 in Minimum Operating Temperature -10 Degrees F