4mm Metric Hexagon and Ball End Hexagon Keys TKB-mm/B 4.0mm by Draper - 33603

Hexagon keys with ball end on the long arm and conventional ends on short arm. The ball type hexagon tip allows the hexagon key to be used up to 30 angle from the screwhead recess. Manufactured from chrome vanadium steel that's hardened and tempered. Sold loose.