1. Apply to almost all lock cylinders, violent opening, efficient, fast, easy to use, without any skills. 2. Suitable for fire, fire supplies and other emergencies, but also for home door locks are broken and can not be opened. 3. Open different locks, just replace different screws to open. 4. The screws are made of special metal with super hardness and not break. Colour:As Shown Material:Metal Package Contents: 1 * Nail Puller 10 * Nails Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.