Three-Prong Watch Case-Back Opener

About this item

Product Identity: This three-prong watch case-back opener is a metal watch repair tool built for hobbyists and household use, featuring a sturdy construction that stands up to regular domestic maintenance tasks.
Primary Function: As a precision watch case opener, it is designed to remove screw-in watch backs with notches by gripping the storage box border securely, though it is not suitable for use with gear-timepiece backs.
Adjustable Design: This adjustable watch case opener with interchangeable gripping surfaces features three movable prongs and a knurled handle, accommodating watch backs with notch spacing up to 55 mm in diameter for a custom fit.
Interchangeable Components: This watch back removal tool comes with 18 interchangeable steel gripping surfaces in 6 different types (3 gripping surfaces per type), allowing you to match a wide range of threaded case-back notch patterns.
Storage & Portability: The set includes a transparent storage case measuring approximately 17.2 × 9.8 × 2.3 cm and weighing about 0.29 kg, keeping the opener and spare gripping surfaces organized and easy to transport between workspaces.

Whether you are a casual hobbyist or simply want to handle simple watch upkeep at home, this three-prong watch case-back opener gives you a reliable metal watch repair tool tailored for everyday household maintenance. Built with solid construction, it feels sturdy in hand and holds up well to repeated use on your personal timepieces. At it rates, this is a precision watch case opener made specifically for screw-in watch backs with notches. You position the prongs into the notches on the storage box border, apply stable turning pressure, and the tool lifts the back off cleanly — keep in mind that it is not designed for gear-timepiece backs, so it works with standard threaded designs. What makes its versatile is that it is an adjustable watch case opener with interchangeable gripping surfaces. The three prongs slide to match different notch positions, and the knurled handle gives you a non-slip grip even when applying firm pressure. It fits watch backs with notch spacing up to 55 mm in diameter, covering most common men's and women's watch sizes. As a practical watch back removal tool, it includes 18 interchangeable steel gripping surfaces spread across 6 different types, with three gripping surfaces of each type included. This variety means you can replace gripping surfaces to match the exact shape and spacing of your timepiece's case-back notches, reducing the risk of slipping or scratching the case during removal. Everything stores tidily a transparent storage case that measures roughly 17.2 × 9.8 × 2.3 cm and weighs about 0.29 kg. transparent lid lets you see all components at a glance, and the compact size fits easily in a workbench drawer, or mobile repair kit, so you can keep your watch repair supplies organized and accessible whenever you need them.

Option: Large 3 Jaw