Unho 13psc Watch Repair Tool Kit Tweezer Battery Change Screwdrivers Back Band Pin Remover Opener Kit Set with Black Case Materials: High Quality Plastic & Stainless steel assembly kit/ Nylon case. Portable handy box set design, convenient storage/carrying case to keep your tools easy-to-find. It helps you to open watch case, repair watchband and internal movement. Small, lightweight, easy to use and durable. Case Dimensions: 8"L x 4"W x 2"H 20*15*5.1.