M35 HSS Cobalt - M35 High speed steel makes it last longer than others, cobalt ensures easily cut through steel sheets, aluminum sheets, copper plastic wood board and many other types of sheet metal with ease. Good Design - Triangle shank fits into power tools chuck securely and eliminates slip; two-flute design clears chips faster and allows particles to escape easily. A necessity for family or handyman or professionals - Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper and many other types of sheet metal, especially for stainless steel plate quenching steel plate. Split point tip increases speed. It can automatically deburr holes while drilling to keep the drill bit clean. You can use water to cooling it when it is work and it can be used for even longer. Product size: 73*47*6.75mm Delivery Quantity: 1 Piece