2 New Watch Case Wrench & Battery Cleaner Tools Case Opener. This is a new case opener. It has adjustable tempered pins for easy use on water resistant cases. It provides a tight non-slip grip. It has long handles for increased pressure. Includes double blade. Tips adjust from 9/16" (15 mm) to 1 9/16" (40 mm) Fiberglass Scratch Brush. This is a new fiberglass scratch brush. It removes rust and dirt from metal surfaces. It has fine glass bristles that are mounted in a plastic case. The bristles can be screw fed as they wear down. Each Bristle measures approximately 1/2" x 3/16" (12 x 5 mm).