Hi Flame 4 Wheel Heavy Duty Trolley Assembly with Silent M10 Bolt & 3 Nuts for All Standard 1-5/8" or Taller Strut Channel Pack of 2

Perfect Compatibility for Standard Strut Systems：Fits all 1-5/8" wide and 1-5/8" or taller strut channels; ideal for overhead lifting, garage hoists, warehouse suspension, construction and industrial moving tasks; ready to use with standard channel hardware without modification 800 LBS Heavy Duty Load & Silent Smooth Operation：Solid hot-rolled carbon steel construction for superior impact resistance; super silent bearing rollers deliver quiet glide without jitter; solid fixed pins enhance stability and durability for long-term heavy-duty use Patented Anti-Jam Groove Design for Hassle-Free Use：Patented groove structure securely holds bolt head in place; prevents catching on strut channel support screws; ensures consistent smooth movement and eliminates stuck or binding issues during operation Premium Corrosion Resistance for Indoor & Outdoor Use：Full nickel-plated trolley body for bright finish and rust protection; M10 bolt, nuts and lifting eye nut manufactured with 304 stainless steel; waterproof and wear-resistant for wet, outdoor or industrial environments Complete Kit & Reliable After-Sales Support： Each package contains 2 sets of products, and each set includes 1 trolley body, 1 M10 bolt (80mm/3.15 inches), and 3 nuts. 24-hour customer service is available to quickly resolve any issues related to installation and use. The product is ready to assemble and use right out of the box, no extra preparation needed