What will you ? The watch back disassembling tool kit includes a watch back opener, a watch bracket, four watch back disassemblers, a watch shell opener and a piece of eyeglass cloth. It is very suitable for watch maintenance and battery replacementWATCH CASE OPENER PRY AND KNIFE - The watch case opener help to make opening cases easier by simply placing the blade under the case back and pry it offNOTE - If you have any problem for product, you can click "seller contact" button in your Amazon account to contact us. We will to help you and reply as as High professional tool kit - these watch repair kits are made of steel and hard plastic and are durable and can be used for waterproof casecolor:YellowMaterial:plasticPackage Contents:1 x Holder4 x Yellow Warps1 x 2- opening1 x block1 x table cloth1 x Yellow Flat Warp KnifeOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.