Folding Hex Key Set of 8 - Metric Ball End | FAIHKSF8MBFaithfull 8 Piece Folding Ball End Metric Hex Key Set Compact & Durable from Keans Claremorris The Faithfull Folding Ball End Metric Hex Key Set is a versatile, compact tool designed for both professionals and DIY enthusiasts. Featuring eight of the most commonly used metric sizes, these ball end keys provide flexibility and strength for fasteners in tight or awkward spaces. Supplied in a folding, soft grip case, this set is easy to store and carry.