Haidms Black Door Knobs Interior, Heavy Duty Zinc-Alloy Privacy Door Knob, Matte Black Interior Door Knobs for Bedroom & Bathroom, Round Ball Design with Emergency Unlock(1 Pack)

PRIVACY LOCK:This privacy door knob provides secure interior locking for bedrooms and bathrooms with push-button design. Emergency exterior release allows quick access, ensuring safe and convenient privacy use. | 250,000+ CYCLES TESTED:This black interior door knob is tested over 250,000 cycles for long-term durability. Maintains smooth operation and stable locking performance under frequent daily use. | ZINC ALLOY & MATTE BLACK FINISH:Made of solid zinc alloy, these matte black door knobs are sturdy and durable. Fingerprint-resistant, wear-resistant, and corrosion-resistant finish for modern interiors. | UNIVERSAL FIT & SAFE DESIGN:These black door knobs interior fit standard doors 1-3/8" to 1-3/4" (3545mm) with adjustable latch. Rounded no-sharp-edge design improves safety and impact resistance. | EASY INSTALLATION:Reversible for left/right-handed doors, includes full hardware for fast DIY setup. Ideal for multiple rooms with consistent home style coordination.