SHMSA46-HD | Stronghand Adjust-O Magnet Square Heavy Duty 40 KG Adjust-O Magnet Squares The original magnet squares featuring On/Off switches. The fast & easy way to hold metal workpieces at 45 and 90. Turn the magnet Off or at the mid-point position when setting up turn On when youre ready to work. Fast and safe set-up! Ideal for round and square tubing angle and flat stock. Easy to clean. Simply turn Off and wipe. Max. Pull Force: 40 kg Dimension: 111 x 95 x 29 mm Weight: 0.7 kg