The Wera 3950 PKL in 2.5mm is a popular size for working with M3 socket head cap screws, widely used in engineering, electronics enclosures, and mechanical assemblies where a reliable, rust-free tool is essential. The stainless steel construction ensures no extraneous rust is transferred to stainless fixings, maintaining material integrity throughout. Wera’s Hex-Plus profile delivers a larger contact surface within the screw head, minimising notching and virtually eliminating the risk of rounding out the recess — helping your screws go the distance. The ball end on the long arm allows off-axis driving, making it straightforward to reach awkward or partially obstructed fixings. 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, 2.5 x 112 mm Specifications: Key Size: 2.5mm Overall Length: 112mm