This is an aluminum socket rail. It is magnetic. It is 1/4 in. Accepts standard and deep sockets. Sizes marked on rails for easy identification. Rail holds 12 sockets, adapters and universal joints.
The TITAN 1/4" DR Metric Magnetic Aluminum would be a great fit for applications requiring precision-engineered tubing, such as for plumbing or HVAC systems, due to its magnetic properties and lightweight composition.