Product Details Facom Hex Key Set - JP Facom hexagon keys are packaged within a smart, compact wallet that has been designed for ease of key selection and organisation. Hex key sets are very convenient as they have all the required hex keys in one holder and are easy to store. These L-shaped hex keys are hand tools used to tighten or loosen fasteners and fixings with a hexagonal configuration. Hex keys are also considered a household necessity, especially those who prefer to have flat pack furniture. A hex key is most commonly used to drive and remove screws and bolts that have hexagonal sockets in their heads.