Torx Screwdriver Bits - TOOGOO(R) 5mm dia T27 Head Hex Shank Magnetic Security Torx Screwdriver Bits 10 Pcs These Security Torx Screwdriver Bits are with a little magnetic design, ( just use a magnetizer to magnetize it if the magnetic reduces after a long time use). Great for your repair works. They are used to open or close the cover of your cell phone, laptops an so on together with the screwdriver grip( not included).