ANTIQUE ROLLING LIBRARY LADDER WHEELS — Iron Anarchy
3ft-20ft Classic Sliding Library Ladder Hardware Kit, Stainless Steel Round Tube Mobile Track Home Office Rolling Rail Full Set Kit, Floor Wheels with Brakes (Size : 3.3ft/100cm Track kit) : Amazon.ca: Tools
Quiet Glide 8 ft. Maple Library Ladder (9 ft. Reach) Black Rolling Ladder Kit with 12 ft. Rail and Horizontal Brackets QG.210-8MA-12-H.08 - The Home Depot
ANTIQUE ROLLING LIBRARY LADDER WHEELS — Iron Anarchy
Standard Rolling Ladder Hardware Kit with Brake Wheels - Richelieu Hardware
104RDHOUSE 12FT Sliding Library Ladder Hardware kit Telescopic Upper Roller ,Floor Wheels with Brakes (No Ladder) : Amazon.ca: Tools & Home Improvement
Bottom wheeled foot with safety brakes – The Library Ladder Company