Bae Security Products 245 Super Jimmy Bar 10-1/2" For Maximum Protection Against Prying Open Of Doors, specially designed to protect the lock and resist against forced entry. The J bar helps prevent shimmying, and it binds the door to the frame. This Jimmy Bar is easy to install. Slip the bolts from existing cylinder guard through the holes, adjust to the desired fit before tightening. On some installations the washer must be used under the cylinder ring to equal the thickness of Jimmy Bar Plates. This Jimmy Bar fits Super Guard Plate--Fichet Securim and most Cylinder Guards. Made in the USA.