GDFYMI Garage Door Rollers, 1.8" Nylon Garage Door Wheels Replacement, 4.7" Stem for Garage Track Replacement Parts with High Load Double Seals Multi-Ball Bearing (2 Pcs, Black)

GDFYMI Garage door track wheel Specifications: Material: Nylon and Steel Color: Black Size: Wheel Diameter: 1.81 inch / 46mm Thickness of Roller: About 0.47 inch / 12mm Stem Length: 4.11 inch / 104.5mm Diameter of Stem: About 0.43 inch / 11mm Total length: About 4.72 inch / 120 mm Package Included: 2 Packs of Garage Door Roller Notes: Manual measurement, please allow slight errors on size (0-3mm). The color may exist a slight difference due to different screen displays. Features: 1. Strong & Durable: The shell of the roller is made of nylon material, which has high hardness and strong wear resistance. 2. Robust & Rust proof: The interior is made of high-quality metal material, the design of the sealed 6200ZZ ball bearing makes it has the powerful performance and a long service life. 3. Quiet & Smooth: Smooth ball bearings reduce rotational friction between rollers and shafts, resulting in quieter and smoother garage door opening and closing, effectively reducing noise. 4. Application: The size of garage door rollers can match most residential garage doors and barn doors, such as standard garage door rails, wooden automatic door rails, etc.