ACRaBoss 3.3Ft-20 Ft Premium Rolling Library Ladder Hardware Kit, Complete Metal Round Tube Mobile Ladder Rack for Bookshelves with Secure Floor Roller/13Ft/400Cm Track Kit

Built from Heavy-Duty Carbon Steel with Waterproof and Rust-Resistant Properties, Coated in Black. Resists Deformation and Offers Long-Lasting Performance Designed for Rails Exceeding 150Cm, the Track Uses a Multi-Section Snap-In Splicing for Increased Strength and Superior Load-Beacapacity Operates Similarly to a Sliding Barn Door Kit, with a Scientifically Engineered Design for Sand Convenient Access to High Places. Materials and Advanced Forging Ensure Safety and Reliability Constructed from Stainless Steel, This Rail Hardware is Designed for Quiet. the Fluid Functionality Ensures That You Can Focus on Your Tasks Without the Hassle of Rattling or Squeaking Noises Contains 1 Hanging Rail, 2 Rollers, 2 Rail Stoppers, 2 Floor Wheels, Trackrts, Track Connectors, and Screws. (Ladder is Not Included; Only Hardware is Provided.), Manufacturer: ACRaBoss