The Siegen 25 Piece Hexagon Allen Key Set combines metric and imperial hex keys in a single comprehensive toolkit, ideal for tradespeople working across different fastener standards. This versatile set features long-arm imperial keys from 1/16" to 3/8" for improved reach and leverage, whilst the short-arm metric keys from 1.5mm to 10mm offer precision access in confined spaces. Manufactured from chrome vanadium steel, the keys deliver excellent strength and wear resistance for professional workshop and on-site applications. The dual sizing configuration makes this set particularly suited to automotive work, machinery maintenance, and general engineering tasks where both imperial and metric fixings are encountered. Supplied in a convenient tool roll for organised storage and portability, the set provides reliable access to commonly required hex key sizes across both measurement systems. Backed by a lifetime guarantee, this is a practical addition to any professional toolkit. Features and Benefits: • Chrome vanadium steel construction for durability and longevity • Long-arm imperial keys provide enhanced leverage for stubborn fixings • Short-arm metric keys offer improved access in restricted spaces • Tool roll storage keeps keys organised and protected • Lifetime guarantee for professional peace of mind Specifications: Brand: Siegen Contents: Long-Arm; 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8", Short-Arm; 1.5, 2, 2.5, 3, 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10mm Nett Weight: 0.70kg