ITEM NAME:Adjustable Watch Repair Tool Kits Back Case Opener Cover Remover Screw Durable Descriptio n Featuresï ¼Å¡ 100% brand new and high quality Watch Screw-on Back Case Cover Opener. For opening waterproof watches case, and to remove watch back case with ease in seconds. Adjustable design: Jaw distance can be adjustable from 8mm to 57mm. Very convenient and easy to take everywhere easy to use. Name: Plastic butterfly Universal Opening meter weight: 28g Material: Plastic + metal Color: Blue ( Black ) Product Includes: Adjustable Watch Back Case Opener *1 ( If you want black color , please contact with us) We offer you what you need! Adjustable Watch Repair Tool Kit Back Case Opener Cover Remover Screw Wrench.For opening waterproof watches case, and to remove watch back case with ease in seconds. Adjustable design: Jaw distance can be adjustable from 8mm to 57mm. We'd like to settle any problem in a friendly manner.