Melco Box Spanner Metric 20mm x 21mm

About this tool

The Melco TM19 Box Spanner features 20mm x 21mm sizing with a 125mm length, providing closely-matched apertures for installations where these sequential sizes appear together. This configuration is commonly required for specific automotive models and plumbing systems where 20mm and 21mm represent standard fastener dimensions. Manufactured from bright plated steel, this spanner delivers dependable performance whilst the 125mm length offers practical reach for most applications. The tubular construction accesses recessed fasteners typical of radiator installations, brake assemblies, and suspension components. The narrow spread between 20mm and 21mm makes this particularly efficient for work on equipment standardised to these dimensions. Having both sizes on a double-ended tool eliminates the need to switch between separate spanners during sequential fastening operations. Tommy bar provision enables proper tightening torque and the breaking force needed for corroded or seized fixings. Features and Benefits: • 20mm x 21mm for sequential sizing • 125mm length for general applications • Bright plated steel construction • Double-ended efficiency for standardised assemblies • Tommy bar compatible for sufficient leverage Specifications: Box Type: Metric Box Spanner Size 1 (mm): 20 Size 2 (mm): 21 Length (mm): 125 Tommy Bar: T38

Retailer description · Tooled Up · Observed 12 Oct 2026. Check the retailer’s listing for full specifications and contents.