The HONEYWELL part 103MG5 is a high-quality magnet from the MG Series by Honeywell. This miniature square magnet is designed specifically for actuating Hall-effect sensors, making it ideal for various industrial applications. With its rare earth composition and pressed construction, this magnet offers exceptional strength and durability. It measures 1.98 mm in width, 1.98 mm in height, and 1.02 mm in depth (or 0.078 in W x 0.078 in H x 0.04 in D). Each tube contains 125 pieces of this reliable magnet.