5PCS Countersink Drill Bit Set, 1/4" Hex Shank Countersink Bit Set for Wood

STRONG METAL CONSTRUCTION: Made from sturdy alloy with powder coating for long-lasting corrosion resistance. | ADJUSTABLE DEPTH RANGE: Fits panel thickness from 0.04" to 0.47" with precise compression adjustment. | SECURE KEYED SYSTEM: All four locks share the same key code for convenient multi-door access. | EASY MOUNT DESIGN: 22mm hole-size fits most industrial or equipment cabinet doors. | PACKAGING : Package includes 4 Pack door locks and 8 keys. Keyed alike.