Allen key tools to help with various DIY jobs - a household and garage essential. Choose from our range of different hex key and star key sets to help you with DIY repairs. These simple tools are used to drive screws and bolts with a hexagonal cross-section. These handy items are often essential when putting together flat-packed furniture, so it's always handy to have an allen key set around the home. Choose from our range of quality manufactured tools at good value prices.