[2025 Rebranding: Zero-Detachment Unistrut Rollers]- Enhanced Durability & Safety Redesigned unistrut trolley wheels solve common failures: improper tightening, rubber elasticity loss, bolt rotation, and metal impact. Engineered for heavy-duty strut channel systems and meat trolley rail system environments. ️ [Gasket-Reinforced Strut Channel Stability]- M10 Bolt Locking System Equipped with polymer gaskets to prevent loosening under load. Essential for garage door unistrut trolley installations and compatible with meat trolley rail system requirements. [8X Impact-Resistant Unistrut Rollers + Galvanized Hardware]- Long-Lasting Performance Features polyurethane unistrut rollers with 8X durability, paired with galvanized carbon steel. Built for sliding strut channel tracks and harsh environments like meat trolley rail system applications. [Quick-Lock Unistrut Trolley]- Safe Electric Pulley System One-hand M10 bolt tightening ensures rapid installation. Ideal for hoist pulley systems and meat trolley rail system setups, reducing accidents while maximizing efficiency. [Industrial Unistrut Trolley for Superstrut & Gutter Brackets]- Conveyor-Grade Reliability Supports record weight loads for unistrut accessories and 5/8" gutter brackets. A conveyor-grade solution for strut channel and meat trolley rail system integrations. Color: As Shown Material: Metal+Rubber Package Contents: 2*Trolley Roller Wheels