Review on DIYHD LT-30E Rolling Library Ladder Brackets For Round Rail - Black (Excludes Rollers, 39-3/4" Extension Track) by Bill Sorenson

Used this for a custom built rolling ladder and bookshelf. I was fortunate to find these rollers that fit 3/4" pipe, so instead of the enclosed short piece of pipe, i used a 10 ft segment of structural piping. Much cleaner look in my application. The rollers worked great as well, but you will have to play with their placement a little. The only downfall to this kit is the screws. These are some of the cheapest screws ever. I had 5 or 6 strip out and i barely even needed that many. Make sure to predrill your holes just slightly undersized of the screw or you'll be pulling these out with pliers. Or maybe just get some better screws from the hardware store.