SAE / METRIC MAGNETIC SOCKET INSERTS. Low profile great for use in shallow well and deep well sockets to keep your fasteners from falling out into tight spots or unrestricted areas. Each insert has a powerful rare earth magnet and made from a very durable and long lasting pla plastic 3D printed by me here in Knoxville Tn. sizes included 8mm,10mm,11mm,12mm,13mm,14mm,15mm,16mm,17mm,19mm, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8
