The Master Magnetics 18-inch Magnet Sweeper is a push-style sweeper for picking up nails, screws, metal shavings, and other small ferrous metal objects. According to our pick-up test, the magnet collects up to 4.1 lbs. of 8-penny nails (about 372 pieces). This means you can clean up large areas in one go! To release the metal debris from the magnet cleaner, simply pull back on the handle. The wheels of the magnet are 7” in diameter with hard rubber treads for easy rolling. The handle can be adjusted from 25” to 44" long and features a comfortable grip so you can push it like a push broom. The Magnetic Sweeper is a well-built, must-have tool for homeowners, mechanics, and roofing contractors. When it comes to picking up metal debris around the shop, yard, or garage, the Magnetic Sweeper is your best option.