Wera 3950 PKL Stainless Long Arm Ballpoint 5.0mm Hex Key Stainless long arm ballpoint Metric Hex Key, 5.0mm hex tip, 6-1/16 inch length Manufactured from 100% Stainless steel, preventing extraneous rust caused by use of conventional tools contaminating stainless fasteners Hex-Plus technology prevents rounding of screw recess and transfers up to 20% more torque Ballpoint on long-arm allows user to insert tool quickly into screw and work at an angle in confined spaces Limited Lifetime Warranty, German Engineered