22 Pc Combo Pack Inch & Metric Key Sets.13 Pc Inch Set .050 to 3/8 in.,9 Pc Metric Set 1.5 to 10mm.Extra Long or Short Metric Ball End Keys,Long Keys are 15 to 25% Longer, Short Keys 40 to 45% Shorter.For better access to screws.25° to 30° Angle Entry Turning.Made from Wiha CRM-72 Special Tool Steel(Best wear resistance, less torque distortion)Hardened for maximum durability.Machine chamfered ends for a perfect fit.No impact cut off distortions.Guaranteed Quality Made In Germany.