Reduced Shank Twist Drill Bits 4.5mm High Speed Steel HSS 4341 with 4.5mm Shank 10 Pcs

Description: 1. High-speed steel straight shank drill bits are good for most general purpose applications offering a combination of hardness and toughness for wear resistance. 2. Reduced shank drills expand the size range capacity of a portable drill chuck. Common flute and overall length for minimal adjustment during tool changes. 3. Pemium gold titanium and black nitride dual coating can apply lubricant better for smoother drilling and is more durable and corrosion resistant than the regular black surface. 4. For use in a wide range of stainless steel aluminum alloy iron copper brass and metal materials. Perfect tool for maintenance departments machine shops and other industries.