Norton for Aluminum wheels have a range of features and benefits including a 5/8"- 11" hub for quick, tool-free wheel changes. Helping to keep metal surfaces clean for defect-free, corrosion-free welding, the new wheels have a contaminate-free bond which does not need any waxes or lubricants. Also, a double coarse layer construction adds versatility and life on applications such as back-grinding and notching. Norton for Aluminum wheels construction is strong and safe, exceeding all the strictest Norton American ANSI and international safety standards.