Torx ® PLUS, is designed to allow greater torque, and to minimize wear. Currently, Torx ® PLUS heads and drivers are patented, slowing adoption in the marketplace. Standard Torx ® drivers can be used to drive Torx ® PLUS screws, but Torx ® PLUS drivers will not fit standard Torx ® screws. There is also a tamper resistant version of Torx ® PLUS, having five lobes and solid post in the center. Drivers for the tamper-resistant version are tightly controlled by Camcar, and are sold only to OEMs (along with the fasteners), or OEM-authorized repair facilities.