This is the Ultimate Racing Metric Hex & Ball Hex ID Collar Set. These identification collars complete your Ultimate Racing hex and ball hex wrenches with easy to see color coded polished and anodized aluminum collars. The collars are also laser etched with metric size for the most popular sized 1.5mm, 2.0mm, 2.5mm and 3.0mm hex wrenches and 2.0mm and 2.5mm ball hex wrenches. Package includes six aluminum collars with set screws.