Apex Torx Plus ® screwdriver bits. The Torx Plus fastener and bit configuration gives a closer fit, 25% increased bit strength and up to 100% more drive cycles. This improved design gets even better when its made with Apex know-how. Apex Torx Plus bits give you a precision fit, high quality steel alloys and our exclusive heat treat process. That mean®s unsurpassed toughness, high torque transfer plus reduced slippage and cam-out.