EFFICERE 8-Piece 1/2” Shank Silver and Deming Drill Bit Set in Aluminum Carry Case, High Speed Steel (HSS) | SAE Size 9/16” - 1” by 1/16th Increment

Premium cobalt high speed steel construction for proven capability and durability to drill holes in wood, plastic, aluminum, copper, stainless, sheet metals and many other types of materials Superior gold titanium and black nitride dual coating finish holds up lubricant better for smoother drilling, and is 80% more durable and corrosion resistant than regular black enamel finish 135° Split point design at tip increases cutting speed with self-centering feature and prevents drill walking or wobbling 1/2 Inch reduced shank with tri-flatted end locks onto 3-jaw power tools chuck more securely and eliminates slips Set includes 8 pieces 6” long silver & deming drill bits in a heavy duty aluminum storage case for easy carrying and organization: 9/16”, 5/8”, 11/16”, 3/4”, 13/16”, 7/8”, 15/16”, 1”