Park Tool P-Handled Hex Wrenches. Features: Ergonomic, nylon P-handle design for comfort and torque with hole in handle for alternate storage Wrenches made from through-hardened high torque industrial steel for long life PH-1.2 includes 2,2.5,3,4,5,6,8, and 10mm P-handle hex wrenches with holder Specs: Description:4mm hex wrench, PH-4