The wera 3950pkl 9 is a 9 piece stainless steel ball end hex key set engineered for professional use with hexagon socket screws. Crafted from high grade stainless steel, this metric l key set prevents extraneous rust transfer when working with stainless steel fixings, making it ideal for applications in food processing, marine environments, and pharmaceutical installations where rust contamination must be avoided. The set features wera's hex plus profile technology, which increases the contact surface area within the screw head to minimise notching and virtually eliminate screw head damage. Each key incorporates a ball end on the long arm, allowing the tool axis to be angled up to 25 degrees from the screwdriving axis for accessing fasteners in confined spaces and around obstacles. The keys are secured in a durable, wear resistant clip fastener that keeps them organised and readily accessible, with clear size markings for quick identification. This comprehensive set covers the most commonly used metric sizes from 1.5mm through to 10mm, providing contractors and maintenance engineers with the essential range for stainless steel fastening applications across mechanical assembly, equipment installation, and precision engineering tasks. Features and benefits bull stainless steel construction prevents extraneous rust contamination on stainless fasteners bull hex plus profile extends socket head screw life by reducing wear and damage bull ball end design enables angled access for round the corner screwdriving bull clear size markings ensure quick key selection during work bull wear resistant clip material provides long lasting organisation and storage contents 1x 3950 9 hex plus stainless 1 sb l key set, metric, stainless, 9 pieces 9x 3950 pkl l key, metric, stainless 1.5x90, 2.0x101, 2.5x112, 3.0x123, 4.0x137, 5.0x154, 6.0x172, 8.0x195, 10.0x224