General description This Melco TM18 Metric Box Spanner is a double-ended tool designed for tightening or loosening bolts and nuts in narrow spaces. Its thinner profile compared to a socket and longer length makes it ideal for accessing recessed areas, making it particularly useful for plumbing maintenance and automotive repairs. Technical specifications Size: 18 x 21mm Length: 150mm (6 inches) Material: Bright plated steel Compatibility and accessories Compatible with standard tommy bars Installation No installation required; simply use with compatible tools to tighten or loosen fasteners in narrow spaces. Usage Use to tighten or loosen bolts and nuts in tight or recessed areas. Suitable for plumbing maintenance and automotive repair tasks. Other information