The EKLIND 25150 5 Piece Fold-Up Hex Key Set is a convenient and lightweight set of tools that makes it easy to access the hex keys you need. The fold-up design makes these hex keys easy to store when not in use. Each key has a black oxide finish, giving them a sleek look and providing corrosion resistance. The handles are made of plastic for comfortable grip. Each key has metric measurements from 3 19/64 in to 5 3/32 in., with tip sizes ranging from 10 mm to 8 mm. If you want a reliable set of hex keys that offers excellent performance, the EKLIND 25150 5 Piece Fold-Up Hex Key Set is an ideal choice for your toolbox.