The bahco 1 2 drive radiator valve ratchet and stepped key set is a comprehensive tool kit designed for the installation and removal of heating valve nipples, tank connectors and short tap extensions. Ideal for plumbers and heating engineers working on central heating systems, this versatile set provides all the necessary fittings to tackle radiator valve work across different sizes. The stepped key design features multiple internal hexagon and internal lug valve sizes along its length, allowing quick adaptation to different fitting dimensions without changing tools. This practical arrangement covers 3 8, 7 16, 1 2, 3 4 and 1 inch sizes, making it suitable for most standard radiator valve applications encountered on uk heating installations. All components feature a chrome plated surface finish for corrosion resistance and durability in wet working environments. The set conforms to iso 3315, din 3122, iso 1174 2 and din 3120 standards, ensuring professional quality and reliability. Supplied in a practical plastic pouch for organised storage and easy transportation between jobs. Features and benefits bull stepped key design covers multiple valve sizes without tool changes bull 1 2 drive ratchet mechanism for efficient operation bull chrome plated finish resists corrosion bull complete set covers 3 8 to 1 inch sizes bull supplied in protective plastic pouch for organised storage bull conforms to iso and din standards for professional quality contains 1 x ratchet, 1 x square drive and 1 x stepped key in a practical plastic pouch. Specifications key type radiator valve ratchet set sizes covered 3 8, 7 16, 1 2, 3 4 and 1in conforms to iso 3315 din 3122 iso 1174 2 din 3120