Introducing the 'Monument 2054X Radiator Spanner Air Release Key'. This dual-purpose tool integrates the finesse of a spanner and the functionality of an air release key, carefully crafted from resilient steel. The zinc detailing demonstrates its unmatched quality and durability. The 12mm spanner is double-ended and features a slightly offset handle for superior control and handling ease. With its versatile type, this can be deemed as the ultimate addition to your tool collection. Always perfect for any radiator adjustments; this tool guarantees efficiency and precision.