I love this case, it is so easy to see all the wrench sizes and very simple to remove and put back. The wrenches themselves seem really sturdy and durable. They fit into the carry case by turning them in or out horizontally. They don't clip or lock into the case, but they also don't fall out when it's transported around. The material of construction is chrome vanadium. They shouldn't become corroded or rusted over time. The back of the case has strong magnets built in. It will allow it to stick onto a metal toolbox or cabinet just fine. This is a great set to get for yourself or as a gift.