2 pieces 100% new and high quality door wheels. Diameter 70mm. Width 34mm. Inner hole 15mm (34x70x15mm) This sliding door roller track kit helps the door to maintain balance, prevents swaying and ensures smooth sliding. An ideal caster for assembling your own industrial furniture. To make a workshop door, relatively heavy and two rollers are enough and rolls well despite the weight. Our groove wheel is made of zinc and nylon alloy, it is durable with stable characteristics and long service time. Easy to install and use. Move the door to save space, decorate and beautify your home. Specification: Material: zinc alloy, nylon Color: as picture shown Size: Approx. 7 * 3.4 * 1.5cm / 2.75 '' * 1.34 '' * 0.59 '' Applicable: barn door Weight: Approx. 314g Package Included: 2 * Barn Door Wheel If you have any questions or problems with our product, please contact us without hesitation by email. We will do our best to resolve any issues.