Massive Storage Capacity 6-Tier Metal Heavy Duty 3D Filament Storage Rack with Wheels Organize Your 3D Printing Universe with Heavy-Duty Efficiency Holds 40-45 Spools Rolling Design & Easy AssemblyDurable & Space-Saving "Perfect for 3D printing enthusiasts with growing collections!" Black & White Dimensions: 61.4"H x 25"L x 14.6"WMaterial: Powder-coated steel (rust-resistant, industrial-grade)Weight Capacity: 150+ lbsCompatibility: Fits 1kg spools (ideal), 500g spools (fits deeper), 250g spools require DIY padding. Massive Storage Capacity Holds 40-45 Spools: Maximize space with 6-tier design, perfect for enthusiasts and small studios."Finally a rack that holds ALL my spools! The wheels let me move it near the printer effortlessly." Heavy-Duty & Stable Reinforced metal frame supports heavy loads without wobbling. 18mm Rods &20mm Frame Ensuring exceptional stability and load-bearing capacity for heavy-duty use in craft rooms or commercial spaces. Dual base options Roll effortlessly on 4 smooth wheels OR lock in place with anti-slip foot pads. Dual base options "Wheels are a game-changer! I move it between my workshop and office easily." Is assembly difficult? Includes pre-drilled parts, bolts, and Allen wrench—no extra tools needed. Most customers finish in 15-30 minutes with the included tools and instructions. Will this fit in a small workspace? Yes! Its narrow 14.6" width fits tight corners, and wheels let you reposition it anytime. Does it work with 500g spools? Yes, but they sit deeper. For 250g spools, we recommend adding DIY padding (e.g., foam tape). Are the wheels lockable? The dual-mode base includes lockable rubber-tread wheels (safe for hardwood) and non-slip feet. Choose your preferred mode!