TSUWNO Security Locks for Sliding Doors and Windows with Strong Adhesive without the Need to Drill. Locking Bolt for Increased Protection and Peace of Mind. - Made of eco-friendly ABS material resistant to pressure, reliable and durable - Prevents babies or pets from opening sliding doors and windows, avoiding the danger of falls - Easy installation without the need to drill or use other tools - Strong adhesive for secure attachment to doors and windows - Comes with 4 locks for sliding doors, size: 7 x 3.8 x 0.6 cm - Suitable for spaces from 0.6 cm to 3.5 cm - Stable triangular design, prevents unwanted slips - Suitable for most glass and wooden sliding doors and windows - Prevents the opening of balcony doors, sliding doors, windows, etc. - Can be easily removed without damaging furniture