Rolling Library Ladder Hardware Kit, Telescopic Upper Roller, Multi-use for Loft Stairs/Bookshelf (3.3FT Sliding Kit)

Durable Steel: Material:Carbon Steel; Color:Black; Surface:Anti-rust Coating | Package Listing: Ladder Hardware:1 x 3.3FT Track,2 x Upper Roller,2 x End Cap,2 x Stopper,2 x Bottom Roller and all necessary screws | Simple Installation: With the professional instructions,rolling ladder hardware can be installed in a short time and can be enjoyed right away | Smooth Motion: Each upper roller consists of two small rollers, which are designed to prevent the ladder from derailing and run smoothly, ensuring maximum safety during use.At the same time the upper rollers can be retractable, can storage ladders. When unused ladders can be put away to avoid space occupation | Choose Us: We are a professional manufacturer and seller of home improvement,bring some highlight to your life.This rolling ladder hardware is the perfect complement to our oak ladders | Upgraded Version: The difference between the upgraded version and the regular version: upgraded version hardware kit can roll out and angel but also roll back and stand straight against the wall for storage.The regular version can only slide parallel