Lifting Magnet Magnet Activation Non-Marring Roller Cam Magnet Material Ceramic Max Rated Flat Capacity 400 lb Min Material Thickness for Activation 3/16 in Max Rated Capacity @ Min Activation Thickness 400 lb Required Material Thickness for Max Rated Capacity 3 in Overall Height 6 3/4 in Overall Length 7 3/4 in Overall Width 7 1/4 in Magnet Height 2 1/2 in Magnet Width 6 1/2 in Magnet Length 4 in Handle Length 16 in Bail Opening Height 2 7/8 in Bail Opening Width 3 in