Application: The pulley bearing is suitable for a wide range of applications, including but not limited to industrial gate, commercial gate, residential gate, sliding barn doors, automatic mobile doors, aluminum doors, pulleys and drawers, wheelbarrows, garden carts, and more. Material: Crafted from stainless steel, the grooved wheel possesses exceptional durability, superior heat and wear resistance, excellent low-temperature strength, and outstanding mechanical properties. Feature: The dual internal bearing enhances the wheel's performance by minimizing friction, resulting in smoother and more agile movement, ultimately providing excellent maneuverability. Note: Before making a purchase, please ensure to select the appropriate wheel size that matches the track dimensions. It is recommended to carefully check the size and verify the suitability of the guide wheel to meet your specific requirements. Specification: Material: 304 Stainless Steel Wheel Diameter: 6.8cm/2.68" Groove Width: 22mm/0.87" Groove Depth: 10mm/0.39" Hole Diameter: 8mm/0.31" Mounting Type: V Groove Package Content: 1 x V Groove Track Wheel