General Description This is a set of extra-long metric hexagon keys designed for various tightening and loosening tasks. Made from durable chrome vanadium steel, these tools are hardened and tempered for strength and longevity. The blacked protective finish helps prevent corrosion, ensuring reliable performance over time. The chamfered ends facilitate easy insertion into fasteners. Technical Specifications Material: Chrome vanadium steel Finish: Chemically blacked protective coating Design: Chamfered ends for easy engagement Length: 17.0mm long arm Compatibility and Accessories Suitable for use with metric hex fasteners Compatible with various tools and accessories that require hex keys Installation No installation required; simply select the appropriate size and insert into the fastener Usage Use these hex keys to tighten or loosen metric hex screws and bolts Ideal for DIY projects, home repairs, and professional applications