This GorillaGrip Fold Up Tool from Bonhus has Inch and Metric tools in one! The GorillaGrip foldup handle is 40% stronger than steel, and will not rust or corrode. The Handle is comfortable to hold, and does not conduct heat or cold. The patented design allows selection of one blade at a time, without the need for annoying mechanisms to release a blade. Blades have a positive stop at 270 degrees open. The convenient flip and turn feature permits screw insertion or removal when working near an obstruction - without the need to continually remove and reinsert the tool into the screw head. GorillaGrip foldups do not have Balldriver tips smaller than 5/32 and 4mm, since the handles could easily over-torque the blades and risk breakage. GorillaGrip foldups have another distinct advantage over metal foldups; blades are accessible from both sides for single blade selection without the 'unstacking' of blades associated with metal foldups. Made of Protanium Steel with a ProGuard dry finish.