1.SOLID WHEEL 2.Size: 6"x1.5"/8"x1.75" 3.Plain bore, or ball bearing available Solid rubber wheel for concrete mixer, wheelbarrow and other heavy duty cartSize: 6"x1.5"/8"x1.5"plastic rimPlain bore, or ball bearing availableREACH approvedIf you need more details, please send me an inqury or contact me 86 532 86880733-8006. thank you. semi-pneumatic wheel for tool chests