Bodylastics Heavy Duty Door Anchor Attachment with Solid Nylon core, dense foam (won"t hurt your door) and super strong nylon webbingThe Bodylastics ultra heavy duty door anchor will enable you to attach almost any resistance bands to a door (hinge side)You get what you pay for - The best quality components on Amazon and the entire market - Guaranteed! DON"T BE FOOLED BY CHEAP IMITATIONS.Everyone Claims that theirs is the best but here are the facts: - Bodylastics door anchors are made with nylon plastic, the strongest and most expensive that you can buy, high density foam, super strong nylon webbing and neoprene - Bodylastics door anchors are designed to be friendly to your door and to your bands. - Bodylastics door anchors can be placed on the hinge side of the door as well as the top and bottom of the door (as long as the door can be securely closed) What"s in the box:1 Heavy Duty door anchor