Professional 2 up 2 Down Double Tandem Shower Enclosure Door Pulley

Professional 2 up 2 Down Double Tandem Shower Enclosure Door Pulley. 4-Wheel Tandem Structure: Complete 2-up 2-down double wheel matching design for stable sliding. Adjustable Height Design: Screw structure allows fine-tuning to fix uneven sliding and jamming. Silent Wear-Resistant Wheels: PA66 nylon wheels with built-in bearings for ultra-silent rolling. Anti-Rust Waterproof Structure: Brass bracket and treated metal fittings suitable for humid environments. Easy Installation: Standard track mounting design, no professional tools required. Customizable Options: Supports custom colors and sizes according to customer requirements. OEM & ODM Acceptance: Factory direct price with mass wholesale support for renovation projects. Premium Material Composition: Made of PA66 nylon wheels, brass brackets, and plastic housing.