Precision watch case opening made simple. This professional-grade tool features a dual-sided adjustable threaded thumb-screw track that extends or retracts two top sliding carriage blocks to match your watch case's exact diameter. The set includes 12 hardened steel die pins with uniquely shaped profiles—round, squared, triangle, and multi-ridged—engineered to slot precisely into corresponding grooves on specific watch brand case backs. Each pin design delivers high-torque grip without slipping or scratching delicate finishes. Perfect for watchmakers, jewelers, and serious collectors who demand precision and reliability.


