WIHA 66982    ErgoStar Ball End Hex L-Key, Inch and Metric, 22-Piece Patented ErgoStar fast auto open key holder makes grabbing the right key fast and easy 60 HRC through hardened durability Durable steel made of Wiha exclusive chrome-v-moly super tool steel Precision machined tips for an exact fit in fasteners Ball end tips make accessing hard to reach areas at an angle easier Guaranteed professional quality Made in Germany, assembled in USA