Mace-Big Jammer

The easily installed Big Jammer Door Brace provides protection at your home, business or hotel room. The Big Jammer is made from strong 20-gauge steel and installs quickly under doorknob and providing you with added security. Easily adjusts with the push of a button to fit most hinged doors. Rubber end caps prevent the Big Jammer door brace from slipping even on fixed carpeting, but are removable for use on sliding glass doors as well.