Carbide Tipped Non Ferrous Metal Blade 7 1/4″ x 60 teeth x 5/8″ bore. For cutting aluminum sheets, tubing extrusions and other non ferrous metals such as copper, brass, lead and magnesium. For smooth cutting, use lots of lubricant and a clamping device. Note: The material must be clamped firmly to the table on both sides during cutting operation. The use of coolant is very important.