ReviewsReduced Shank Counterbores

uxcell Reduced Shank Drill Bit 21.5mm High Speed Steel HSS 4241 with 1/2 Inch Straight Shank

High Speed Steel tool - 21.5mm cutting diameter. Good for most general purpose applications, featuring a combination of hardness and toughness for wear resistance..
Reduced Shank - Expanding the size range capacity of a portable drill chuck. Common flute and overall length for minimal adjustment during tool changes..
Polished Finish - Polished treatment adds lubricity. Small pockets on the surface of the tool that act to hold coolant near the cutting edge..
Wide Application - Drill low and medium tensile strength materials, such aluminum, iron, copper, brass and metal. Reduced shank drill bit is widely suitable for wood processing. (Hardness of the material to be drilled should not exceed 29HRC.).
Please Note: To make clean and precise holes, water is required for lubrication and cooling when drilling metals, and the feed speed should be controlled. Increased use of water lubrication will extend drill bit life..

M42 Cobalt 1/2-inch Reduced Shank Silver and Deming 135-Degree Split Point.
135-Degree split point for accurate centering and fast penetration.
Precision ground point, flutes, body, clearance and drill diameter for ultimate accuracy and performance.

Set of 33 reduced shank drill bits includes inch sizes 1/2″ through 1″ in 1/64″ increments.
High-speed steel (HSS) provides hardness for wear resistance.
Black oxide finish reduces bit wear while promoting chip and coolant flow on ferrous material.
Self-centering 118-degree split point penetrates material without a pilot hole.
Round shank with flats has three flat sides for better tool grip than a standard round shank.

Set of 16 reduced shank drill bits includes inch sizes 17/32″ through 1″ in 1/32″ increments.
High-speed steel (HSS) provides hardness for wear resistance.
Black oxide finish reduces bit wear while promoting chip and coolant flow on ferrous material.
Self-centering 118-degree split point penetrates material without a pilot hole.
Round shank with flats has three flat sides for better tool grip than a standard round shank.

Speed helix design for three times faster drilling than standard bits.
Last 50 percent longer than high-speed steel.
Easier drilling, reduced heat and extended drill bit life.
Available in jobber length, stubby length, extended length (aircraft), 1/2 In. reduced shank (Silver and Deming).
For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.

Speed helix design for three times faster drilling than standard bits.
Last 50 percent longer than high-speed steel.
Easier drilling, reduced heat and extended drill bit life.
Available in jobber length, stubby length, extended length (aircraft), 1/2 In. reduced shank (Silver Deming).
For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.

Speed helix design for three times faster drilling than standard bits.
Last 50 percent longer than high-speed steel.
Easier drilling, reduced heat and extended drill bit life.
Available in jobber length, stubby length, extended length (aircraft), 1 2 In. reduced shank (Silver and Deming).
For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.

Speed helix design for three times faster drilling than standard bits.
Last 50 percent longer than high-speed steel.
Easier drilling, reduced heat and extended drill bit life.
Available in jobber length, stubby length, extended length (aircraft), 1/2 In. reduced shank (Silver and Deming).
For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.

Speed helix design for three times faster drilling than standard bits.
Last 50 percent longer than high-speed steel.
Easier drilling, reduced heat and extended drill bit life.
Available in jobber length, stubby length, extended length (aircraft), 1/2 In. reduced shank (Silver and Deming).
For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.

Speed helix design for three times faster drilling than standard bits.
Last 50 percent longer than high-speed steel.
Easier drilling, reduced heat and extended drill bit life.
Available in jobber length, stubby length, extended length (aircraft), 1/2 In. reduced shank (Silver and Deming).
For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.

Speed helix design for three times faster drilling than standard bits.
Last 50 percent longer than high-speed steel.
Easier drilling, reduced heat and extended drill bit life.
Available in jobber length, stubby length, extended length (aircraft), 1/2 In. reduced shank (Silver and Deming).
For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.