The Best Imperial Jobber Drill Bits of 2023

【M35 Cobalt Steel】These twist drill bit set made of high-quality M35 cobalt-containing high-speed steel, resistant to high temperature and grindingIt,which allows the drill to easily drill on hard surfaces then quickly achieve the purpose. Offer excellent performance and durabi

【Smooth design】: With 135 degree self-centering tip, apply pressure evenly, Hardened and polished to form a sharp cutting edge, the precision grinding process provides a smooth surface and high grinding accuracy, helping you to drill through surfaces with ease.

【Chip removal chute】：Classic humanized double spiral chip evacuation groove design. The grooves-2 grooves help remove chips and debris from the drill bit, reducing friction and heat, thus achieving a faster, cooler drilling process.

【Package】: The twist diamond set comes with its own red outer box for easy storage and outer box snap hook for easy locking storage with a portable hook design. Easy to carry and fold to save bulk and easy to store. The box is marked with the inch size of each drill bit, from 1/16 inch to 1/4 inch, for easy access

【Widely application】: This set of twist drill is especially suitable for drilling in stainless steel, cast iron, copper, aluminum alloy and other metal materials; for drilling in plastic, wood and so on. Convenient 13-piece set to meet your work needs, suitable for home renovation DIY and general industrial applications.

Designed for easy and effective drilling of metals including the harder alloys

High temperature resistance due to addition of cobalt

Superior hardness due to tungsten and molybdenum base

135 degree split point makes entire point of the bit one long cutting edge

Heavy duty flute design

Designed for easy and effective drilling of metals including the harder alloys

High temperature resistance due to addition of cobalt

Superior hardness due to tungsten and molybdenum base

135 degree split point makes entire point of the bit one long cutting edge

Heavy duty flute design

Assortment of 29 jobber length drill bits includes inch sizes 1/16" to 1/2" in 1/64" increments

High-speed steel (HSS) provides hardness for wear resistance

Black and gold oxide finish resists corrosion and increases the hardness of the drill bit

Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging

Comes in a plastic storage case

COBALT STEEL - Manufactured from M35 cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit.

SELF CENTERING - The 135°quick-cut pilot split points are self-centering and can penetrate quickly with less pressure. The bits will not "walk" or "wander". Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks.

19PC METRIC SET - The set includes 19pcs of M35 cobalt steel twist drill bits: 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7 mm, 7.5mm, 8 mm, 8.5mm, 9 mm, 9.5mm, 10 mm. Well organized in a tough metal indexed storage case for easy transport to your worksite.

FOR METALWORKING - Particularly successful in cutting through hard metals(hardness less than HRC38°) such as stainless steel and cast iron, although they can be used for softer materials like copper and aluminium, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate.

DOWNLOADABLE USER GUIDE - We've summed up some tips of drilling metals, including a RPM chart for several common metals, based on our reviews and some articles on the internet. In most cases, our customers would get a much better result with these tips. Welcome to download.

Designed for easy and effective drilling of metals including the harder alloys

High temperature resistance due to addition of cobalt

Superior hardness due to tungsten and molybdenum base

135 degree split point makes entire point of the bit one long cutting edge

Heavy duty flute design

Easy drilling of hard metals

High temperature resistance

Will drill through stainless steel

Effective at lower speeds

Used by locksmiths

29 pc. Ultra Dex Set Premium High Speed Steel Heavy Duty NAS 907B 135-Degree Split Point

1/16 - 1/2 by 64ths - Ultra Dex

Precision ground point, flutes, body, clearance and drill diameter for ultimate accuracy and performance

Special Hi-Molybdenum tool steel/ Gold Oxide

NAS 907B Heavy Duty Jobber

Designed for easy and effective drilling of metals including the harder alloys

High temperature resistance due to addition of cobalt

Superior hardness due to tungsten and molybdenum base

135 degree split point makes entire point of the bit one long cutting edge

Heavy duty flute design

Designed for easy and effective drilling of metals including the harder alloys

High temperature resistance due to addition of cobalt

Superior hardness due to tungsten and molybdenum base

135 degree split point makes entire point of the bit one long cutting edge

Heavy duty flute design