The Wera 3950 PKL in 6mm is a robust option for M8 socket head screws, commonly encountered in structural engineering, heavy machinery, and industrial installations where both strength and corrosion resistance are paramount. Fabricated from high-grade stainless steel, this key eliminates the risk of extraneous rust transfer to stainless fixings — essential in food production, pharmaceutical, marine, and architectural applications. The Hex-Plus profile ensures maximum engagement with the screw head, minimising notching and protecting the recess from damage even under high torque. The ball end on the long arm provides the freedom to drive at angles of up to 25°, making it much easier to work in recessed or obstructed positions. Features and Benefits: • Stainless steel construction prevents extraneous rust on stainless fixings • Hex-Plus profile protects screw recesses and extends screw life • Ball end on long arm for angled “round the corner” screwdriving • Metric sizing Contents: 3950 PKL L-key, metric, stainless, 6 x 172 mm Specifications: Key Size: 6mm Overall Length: 172mm