DIYHD 132FT Rolling Ladder Hardware Sliding RailTop RollerFloor Wheel with Brake

MaterialMetal SurfaceBlack 132FT full set hardware including 3937 rail with welded brackets X 4Jointin rail connector X 3 Top roller X 2 Bottom wheel with brake X 2 Stop X 2 End cap X 2 Screws X 1 set Bracket length 3 18 Please make sure the bookcase where you want to install the rail wider than brackets length Sometimes a shelf is so high that you hardly use the upper storage room because it is not convenient to reach While a normal ladder might be a little bit too heavy for a teenager or a lady these easy gliding rollers designed for ladders help you glide the ladder left or right with minimal effort