Add to Cart Quick view 63/64" Cobalt Steel Taper Length Drill Bit Qualtech List Price: $323.75 Now: Price: $184.54 List Price: 63/64" Cobalt Steel Taper Length Drill Bit. Cobalt taper length drills are made of heat resistant M35 5% cobalt. Features heavy duty construction for drilling in tough alloy steels, forgings and... DWDTLCO63/64 List Price: $323.75 Now: Price: $184.54 List Price: Add to Cart Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: List Price: $323.75 Now: Price: $184.54 List Price: Subtotal: Add to Cart