Superior quality rim lock with three strong bolts to protect your home and office. Durable, strong and corrosion resistant, keeping you secure for years. Has a dedicated aldrop bolt which provides privacy as well as added security. Comes with advanced Ultra XL+ technology. The colour button on key aids in differentiating key of one user from the other. Bigger keyhead of Ultra XL+ key provides better grip, making it very easy to operate the lock.3 strong bolt with distinct features likr latchbolt.deadbolt and privacy.provide high security to your property.