Available in a range of sizes (8mm-19mm), these combination spanners are made of chrome vanadium steel and have an innovative ratcheting open-end design. The 72-teeth ratcheting system needs only 5° movement to operate ratchet and the spanners are ideal for use in confined spaces. The chrome plated mirror finish prevents oil and dirt from adhering to the tool, making for easier cleaning and preventing rust. Conformance to ASME B107.100-2010.