Made of high quality aluminum alloy. ultra light, compact body is built with aircraft aluminum frames and stainless steel hardware. Our key holder accommodates up to 10 flat standard-sized house keys. Compact key holder is easy to assemble, no tools required, holds all of your existing keys. It is a ridge keychain at the same time a perfect key holder for car key. It comes with a loop piece attachment for your larger car keys or car fob remote. Say goodbye to bulky keyrings.