2 pieces brand new and high quality door wheels. Diameter 70mm. Width 34mm. Inner hole 15mm (35x70x15mm) This sliding door roller track kit helps the door maintain balance, prevents swinging and ensures smooth sliding. An ideal caster for assembling your own industrial furniture. To make a workshop door, relatively heavy and two casters are enough and roll well despite the weight. Move the door to save your space, decorate and beautify your home. Our grooved wheel is made of zinc alloy and nylon, it is durable with stable characteristics and a long service time. Easy to install and use. This sliding door roller track kit helps the door maintain balance, prevents swinging and ensures smooth sliding. An ideal caster for assembling your own industrial furniture. To make a workshop door, relatively heavy and two casters are enough and roll well despite the weight. Our grooved wheel is made of zinc alloy and nylon, it is durable with stable characteristics and a long service time. Easy to Easy to install and use. Product color: black Quantity delivered: 2 pieces