[Size] - Wheel Size: 19x6mm / 0.75x0.24 Inch(DxH); Thread Size: M6x8mm. Thread Size: M6x8mm; Outer Diameter: 19mm / 0.75 Inch. [Material] - The bearing roller is made of POM, and the threaded rod is made of stainless steel. [DIY Gadgets] - Slide smoothly and silently. Great accessories to build a track guide that fits most bottom/side-mounted systems. [Wide Applications] - This bearing roller is widely used in sliding door, screen window, cabinet, drawer, car, wardrobe and so on.
