Wera 950SPKL Multicoloured Ball End Hexagon Allen Key Metric

The Wera 950SPKL 4mm Multicoloured Ball End Hexagon Allen Key is one of the most commonly specified sizes across professional trades, making it an essential addition to any toolbox. At 4 x 137mm, it delivers excellent leverage for driving hex socket screws in automotive, mechanical engineering, and general workshop applications. The Hex-Plus profile provides a larger contact surface within the screw head than a conventional hex key, substantially reducing the notch effect and protecting fasteners from rounding — even under repeated high-torque use. This makes the 4mm an ideal daily-use key for professionals working with medium-sized fixings. The colour-coded hose sleeve ensures rapid, error-free size selection and maintains a comfortable, secure grip across a range of working temperatures. The ball end on the long arm allows confident angled access in restricted spaces, while the BlackLaser surface treatment offers reliable corrosion resistance. Laser-engraved size markings remain clearly legible for the lifetime of the tool. Features and Benefits: • Hex-Plus profile protects screw heads and extends fastener life • Colour-coded sleeve for instant identification and comfortable grip • Ball end for effective angled access in confined installations • BlackLaser finish for excellent corrosion protection and durability • Permanent laser-engraved size marking resistant to abrasion Contents: 950 SPKL L-key Multicolour, metric, 4 x 137 mm Specifications: Hex Size: 4mm Overall Length: 137mm