Prime-Line S 4180 Door Knob Lock-Out Device &ndash; Prevents Turning of Door Knob and Access to Keyhole, Can be Used for Home Rentals, Evictions, Job Sites and More &ndash; Keyed Alike, Gray Diecast PREVENT ACCESS TO KEYHOLE  This door knob lock-out device prevents turning of knob and access to keyhole, ensuring others with a key are not able to unlock the door. For use with keyholes in round door knobs of up to 2-7/16 in. outside diameter. FOR RENTALS, EVICTIONS AND MORE  This lockout device is often used in evictions, rentals, home sales, job sites and in-home or office storage. QUICK, EASY INSTALLATION  Installation is quick and easy  just place door knob lock-out device over the door knob, lock and go! DURABLE CONSTRUCTION  With diecast construction and a gray painted finish, this lock-out device is built to last. Cylinder is held in place with an O-ring and is removable when device is open and unlocked. The cylinder cannot be removed when device is closed and locked. PREVENTS - This lock out device is designed to prevent turning of knob and access to keyhole. Note: All padlocks in the set are opened by the same key.