Amtech C3155 Radiator hex Key

Amazon

1/2" RADIATOR HEX KEY: Designed for precision and reliable use in DIY and trade projects STEEL BODY: Durable construction provides strength for long-term performance SIZE CAPACITY: 2inch range ideal for plumbing and trade tasks COMPACT DESIGN: Suitable for confined or hard-to-reach spaces GENERAL DIY TASKS: Versatile addition to any home or professional toolkit, Weight: 0.4629707502 pounds, Manufacturer: DK Tools

ManoMano

General description Heavy duty 12.7mm [1/2”] hexagonal radiator key with a 10mm [3/8″] square end, designed for installing and removing 1/2” BSP radiator valve tails and vent plugs. Technical specifications Hexagonal size: 12.7mm [1/2”] Square end size: 10mm [3/8″] Material: Durable zinc plated high tensile steel