Usage Tips: Adjustable tempered pins for easy use on water-resistant cases The watch case holder tool features 4 durable adjustable plastic pins to minimize slipping and scratching It can be adjusted to different positions to accommodate various case sizes A professional tool set for watch repair Watch Back Case Opener This is a waterproof watch back case wrench Simple to use and fully adjustable, with tempered pins for water-resistant cases Compact size for convenient handling Adjustable distance from 12 mm to 57 mm Dimensions: 70 mm × 28 mm × 11 mm Material: alloy and plastic Color: blue and yellow Designed for securing watch cases during opening and closing of waterproof case backs Useful for holding watches—including diver-style watches—in place while using a hand wrench to open the case back Helps minimize risk of slipping and scratching the watch Can also serve as a holder while working on the watch Includes base and 4 adjustable nylon pegs May be mounted on a desk or workbench Firmly holds cases up to 70 mm in diameter Package includes: 1 × Watch Back Case Opener 1 × Watch Holder