CTD Store Window Bar Security System -Feel Safe At Home with This Adjustable Home Security Bar 1-1/2" dia. x 20 to 41" Window Bars easily adjusts to the height of a window and locks securely in position. Rubber tips provide a sure grip without scratching the window Window Security Bar, 1-1/2" dia. x 20 1/2" to 41"L, each. Steel and PVC. Attention: You will receive one set of 2 pieces. Sturdy steel won't bend, break or pop out. locking device is easy and convenient to use and security bars are adjustable!