|This cast aluminum alloy valve spring compressor fits Lycoming parallel valve and angle valve horizontally opposed engines. An excellent tool at an economical price.|
The tool comes with a sticker applied to the handle that says to be sure to break loose any stuck valve stem retainer's before using this tool. Mine were stuck and I didn't heed the warning on the tool. I broke the tool. The tool fits the Lycoming IO-360 engine perfectly and is very ergonomic but the tool is cast aluminum and won't hold up to much abuse.
good tool but has broken after some uses !! alumium alloy bad