Torx screws and bolts have a distinctive 6-point star shaped head which mate perfectly with appropriately sized screw heads. The unique Torx design means that there is less likelihood that the screw head will be stripped or the screwdriver damaged. Imprex non-magnetic Torx screwdrivers and keys are made from titanium and are perfect for MRI applications where non-ferrous Torx tools are necessary. We also offer non-magnetic Torx wrenches in L-key (Allen) form as well. https://www.imprex.net/product-category/titanium/titanium-torx-keys/