<b>Q:</b>-- Hole-freeSafety?--<br> <b>A:</b> Yes,this is a Pressure Mounthed.You don't need screws screwed in your wall.Without damaging the wall.set up with no tools requires.In house.<br> <br> <b>Q:</b>--Can be removed quickly in case of an emergency.How does that work?--<br> <b>A:</b> Yes.wWhen an Emergency happened,you can easy adjust the "adjustment knobs" of four bolts.That will be sooner than remove screws(screws window bar)<br> <br> <b>Q:</b>--What is window guard material and size?--<br> <b>A:</b> ABS plastics + Paint Irons made.measure.<br> <b>A:</b> <b>Bar Spacing:</b>7cm/2.75 inches,Conform Exceeds 4 inch recommended safety standard for child window bars; <b>Bar Height:</b>76cm/29.9inches;<b>Bar Diameter:</b>1cm/0.39Inch.<b> Mounting Options:</b> Horizontal or vertical installations.<br> <br> <b>Q:</b>--Is this sturdy enough to serve as a burglar/break or just baby safety bar?--<br> <b>A:</b> NO a burglar/break.measure.<br> <b>A:</b> Need in house installtion.This bars are pretty sturdy, especially when installed correctly. Once bolted to the side of the windows it will prevent a risk for accidental falls for you baby and toddler also prevent your dog from running into the window.<br> <br> <b>Urgent:</b>1.can unloading the Window Guard out of the way,but need use the wrench.It may take as much time as the installation.<br> 2.Used the child safety window Guards,need Check the stability of both Adjustive Bolts regularly.<br> 3.Remember your adult supervision is always the most important safety measure.<br>