2 PCS 4 Wheel Trolley Assembly Rollers | Bearing Trolley Assembly | Allowing The use of 1-5/8" high Strut Channel

["**Precision Engineering**: Our 4 Wheel Trolley Assembly Rollers are expertly crafted from hot-rolled carbon steel, ensuring they are impact-resistant and built to last. Galvanized for superior rust resistance, these wheeled trolleys operate smoothly and silently, thanks to firmly welded bearings and pins that enhance stability and strength.","**Versatile Application**: Designed with a steel plate hole diameter of 1/2” (13mm) and a thickness of 0.16” (4mm), our 4 Wheel Trolley Assembly Rollers are compatible with all 1-5/8\" wide strut channels. Whether you’re working on a ceiling trolley system or other installations, these rollers offer the flexibility needed for various projects.","**Impressive Load Capacity**: 280 lbs at 600 rpm; 380 lbs at 300 rpm; 450 lbs at 100 rpm. Break strength: 3969 lbs. Our 4 Wheel Trolley Assembly Rollers can handle substantial weights with ease. The break strength of 2200 lbs ensures reliability even under heavy loads, making them ideal for demanding applications.","**User-Friendly Design**: Our 4 Wheel Trolley Assembly Rollers simplify transportation tasks, making them perfect for installation in ceiling trolley systems, electric lifts, or your DIY projects. The practical design decreases installation difficulty, enhancing overall efficiency.","**Customer Service**: If you have any questions regarding our 4 Wheel Trolley Assembly Rollers, please reach out via email."]