Do the regular screws that come with the Key-Bar not provide enough room for your keys? This set with extra-long screws is what you need. It is a set with 4 different types of screws which shortest set can give room to 14 keys total. The second largest can take up to 18 keys and third set provides space for 24 keys. It allows you to bring 28 keys with you at one time. These are estimates of course, depending on the width of the keys and the other tools you use.