The improved Slim N17 Serialised Combination Laptop Lock for Wedge-Shaped Slots 25-Pack delivers increased strength in a smaller size. It\'s the strongest keyless locking solution for laptops and tablets with a wedge-shaped lock slot, independently verified and tested for industry-leading standards in torque/pull, foreign implements, lock lifecycle, corrosion and other environmental conditions. The Slim N17 Serialised Combination Laptop Lock for Wedge-Shaped Slots 25-Pack features a stronger cable with greater pull strength, an updated slider for easy one-handed engagement of the lock, and a pre-programmed 4-number code so you can immediately put it to work without having to set the combination yourself. A serial number is etched onto the lock, making it easy to verify and retrieve a lost or forgotten combination.