Features: Discover the set of 4 radiator bleeder key, expertly crafted from aluminum alloy for durability and reliability, making it a essential tool in your toolboxes.<br> These radiator key is hard anodized to withstands wear and tear, ensuring easy ventilation even in tight space with square socket for most radiators.<br> For maintenance professional, engineers, and DIYer enthusiasts, this set is perfect for anyone needing efficient radiator bleeding without hassle.<br> Perfectly suited for use in residential, commercial, and industrial setting, these key is indispensable for maintaining hvac systems, plumbing, and gas equipment.<br> Say goodbye to excessive noise and enhances heating efficiency by regularly using these radiator bleeder key, designing to provide a seamlessly operation experience.<br> Specifications: Component:Steel<br> Four-corner key Size:Approx.24.6x20.3x9mm/0.96x0.79x0.35inch Bayonets diameter: Approx.5mm<br> Extended four-corner key Size:Approx.23.2x26.4x9mm/0.91x1.03x0.35inch Bayonets diameter: Approx.4.9mm<br> Color:Silver<br> Package Includes: 4pcs Radiator Bleeder Wrenches<br> note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order.<br> 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item.<br> Thanks for your understandings.