Defender Security Chrome Swing Bar Door Guard with Lock National Elastic blue rubber is a

Elastic blue rubber is a super elastic rubber wheel with brake that instantly regains original form when force is applied to the caster

Toss away that unwieldy hammer

Strike box prevents lock bolts from being pushed in with a punch on out-opening doors

Electronic

or corner post

Defender Security Chrome Swing Bar Door Guard with Lock National Elastic blue rubber is aAllows door to be opened slightly for viewing. Adds security to entry door and helps to prevent forced entry; Addition of thumb turn lock prevents use of emergency release tool to gain access. In case of emergency, the thumb turn will breakaway with approximately 100 lbs. of force. Easy to install using included fasteners