Hiforce 1/2Inch Step Wrench | Radiator Spud Wrench

Multi-Step Versatility: The tool typically incorporates 5 distinct steps to accommodate various hexagonal and lugged internal sizes. Common step sizes include:
- 10mm (3/8")
- 11mm (7/16")
- 12.5mm (1/2")
- 16mm (5/8")
- 21mm
1/2Inch Square Drive: Designed to be used with a standard 1/2Inch (12.5mm)
ratchet handle, enabling high-leverage tightening or loosening in confined spaces.
Heavy-Duty Construction: Typically manufactured from Chrome Vanadium Steel or high-grade carbon steel for wear resistance and long service life.
Specialised Geometry: Its tapered, stepped profile allows it to grip the internal lugs or hexagonal recesses of radiator valves without damaging the external finish of the fitting.