General description The 4pcs Black 3 in 1 Door Lock is a practical and portable security solution designed for travel and home safety. Made from high-quality 304 stainless steel, these locks are durable and reliable, providing extra security and privacy. They are easy to install without any tools, making them ideal for travelers, students, and families. Technical specifications Material: 304 stainless steel Size: 3.15 x 1.97 inches (8 x 5 cm) Weight: Lightweight and compact for portability Applicable door thickness: Between 1-1/8 inches Door gasket requirement: Greater than 0.3 cm (0.12 inches) Installation No installation tools required Can be installed easily even if someone outside has the key Ensure the side of the door is flat without protrusions Usage Provides additional security for travelers, students, single mothers, and families Suitable for use in hotels, schools, and during travel Other information Package includes 4 pieces of 3-in-1 portable door locks Ideal gift choice