Lifting Magnet Maximum Flat Load Capacity 1 000 lb Maximum Round Load Capacity 500 lb Minimum Thickness for Activation 1/4 in Minimum Thickness for Maximum Load Capacity 1/4 in Activation Mechanism On/Off Handle Magnet Length 9 1/4 in Magnet Width 3 3/8 in Magnet Height 4 5/8 in Overall Length 13 1/4 in Overall Width 5 1/2 in Overall Height 8 in Bail Inside Width 1 1/2 in Bail Inside Length 1 7/8 in Handle Length 10 1/8 in Minimum Operating Temperature -10 Degrees F