Our hang-type magnetic sweepers greatly reduce the possibility of costly and dangerous flat tires and injuries caused by nails, scrap iron particles, welding remnants, wire, staples, tacks, and metal shavings. Simply hang a magnetic sweeper from your forklift or vehicle bumper and "sweep" all contaminated areas. Wipe the face of the magnet with a glove or heavy shop towel to dispose of unwanted iron. Although the magnetic road sweeper will lift a 3-1/2" long 16 penny nail from 5" off the ground, the recommended sweeping height is from 2 to 4inches depending on the terrain. Two eyebolts are installed on each magnet for mounting. Permanent magnetism guaranteed.