Reisser HSS-G ground drill bits in extra long series. 135° split point tip for clean, accurate entry into steel, iron, wood and hard plastics. DIN1869 spec. Available in sizes from 3.0mm to 10.0mm.
Available options and pricing for HSS-G Pro Ground LONG SERIES Drill Bits - Pk, with quantity selectors and a running total
Size
QTY
SKU
Price
QTY
Total
3.0mm x 100mm
10
HSS-XL-3
£8.96£10.75
—
3 2mm x 106mm
10
HSS-XL-32
£9.94£11.93
—
3.5mm x 112mm
10
HSS-XL-35
£10.97£13.16
—
4.0mm x 119mm
10
HSS-XL-4
£12.45£14.94
—
4.8mm x 132mm
10
HSS-XL-48
£13.91£16.69
—
5.0mm x 132mm
10
HSS-XL-5
£14.91£17.89
—
6.0mm x 139mm
10
HSS-XL-6
£19.80£23.76
—
8.0mm x 165mm
5
HSS-XL-8
£14.90£17.88
—
10.0mm x 184mm
5
HSS-XL-10
£24.80£29.76
—
These Reisser long series HSS ground drill bits are made to DIN1869 standard, which means you get the extra length where standard drill bits simply can’t reach. Whether you’re drilling through thick section steel, deep into timber, or working through stacked materials, the added reach makes jobs possible that would otherwise need an extension or a complete rethink. If you’ve ever snapped a short bit trying to coax it deeper than it was ever meant to go, you’ll already know why long series hss ground drill bits exist.
The HSS-G designation means the flute and cutting edges have been precision ground rather than just milled. That matters in practice. Ground bits run truer, hold an edge longer, and produce a cleaner hole with less heat build-up than rolled equivalents. The 135° split point tip cuts from the centre outward, reducing the tendency to walk on entry without needing a centre punch on most surfaces.
Where Long Series HSS Ground Drill Bits Earn Their Keep
The extra length is the whole point here. These bits suit jobs where a standard series bit bottoms out in the chuck before it gets through the material, or where you need to reach into a recess, through a box section, or across an awkward angle. Electricians and plumbers know the feeling well. Fabricators working with thick plate will get on with these, as will anyone drilling through structural sections or building in tight spaces where the drill body itself needs to clear an obstruction.
Suitable for most steels, cast iron, aluminium, hard plastics and timber. The ground flutes clear swarf cleanly at normal drilling speeds, which helps maintain bit temperature and extends tool life in repetitive work.
Available Sizes
Stocked in nine sizes from 3.0mm up to 10.0mm, with overall lengths from 100mm to 184mm depending on diameter. Sold in packs of five or ten depending on the size selected. Useful if you run a van stock or regularly burn through a particular size on site.
Pro Tip: Keep your drill speed in the right range for the material: too fast on steel and you'll blue the tip before you know it, which kills the hardness and ruins the bit far quicker than the workpiece will.
Long series HSS ground drill bits are the go-to when you need depth that a standard jobber bit won't give you. Electricians use them to run cables through deep timber sections or stud walls from a single side. Plumbers reach through box section frames. Fabricators bore through thick plate or structural steel without needing a stepped setup. They also handle hard plastics, aluminium and cast iron cleanly, making them useful in workshop environments as well as on active sites.
Best For
Drilling through thick steel sections
Deep holes in timber and engineered wood
Hard plastics and acrylic sheet
Cast iron and aluminium
Reaching into box sections and recesses
Van stock and repetitive trade use
Compatible With
Standard keyed and keyless chucks
Pillar drills and bench drills
Cordless and mains powered drills
Drill press setups
Round shank compatible chucks
Key Specifications
Standard: DIN1869
Steel grade: HSS-G (precision ground)
Tip angle: 135° split point
Sizes: 3.0mm to 10.0mm
Overall lengths: 100mm to 184mm
Pack sizes: 5 or 10 per pack
Not suitable for: Not suitable for masonry, brick, concrete or tile, which require carbide tipped or SDS bits. Not designed for hardened steels or tool steel without appropriate cutting fluid and reduced speeds.
Mark your hole position with a centre punch on metal to stop the tip wandering on entry. Set your drill speed according to the material and bit diameter: smaller bits and softer materials take higher speeds, larger bits in steel need lower RPM. Apply consistent, moderate pressure and let the bit do the work.
Use cutting fluid or a drop of oil when drilling steel, especially in thicker sections. This keeps the tip cooler, extends bit life noticeably, and produces a cleaner finished hole. Clear swarf regularly on deep holes by withdrawing the bit partway, particularly in aluminium which can pack the flutes quickly.
Select the correct bit size for your application and fit it securely into the chuck
Centre punch the entry point on metal surfaces to prevent the tip from skating on contact
Set drill speed to suit the material: lower RPM for hard steel, higher for soft metals and plastics
Apply a small amount of cutting fluid or oil to the tip when drilling ferrous metals
Begin drilling with light pressure until the tip has established the hole, then increase feed pressure steadily
Withdraw the bit periodically on deep holes to clear swarf from the flutes
Allow the bit to cool between holes during repetitive work in hard materials
What is the difference between HSS-G and standard HSS drill bits?
HSS-G means the bit has been precision ground after hardening, rather than just milled to shape. The ground finish produces sharper, more consistent cutting edges, better dimensional accuracy, and longer service life, particularly when drilling harder materials regularly.
Can these be used in a standard cordless drill?
Yes. These have a standard round shank and will fit any keyed or keyless chuck that accommodates the diameter you're using. Just match your drill's speed settings to the material and bit size for best results.
Do I need cutting fluid when drilling with these bits?
For steel and cast iron, cutting fluid or a light oil makes a meaningful difference to both bit life and hole quality. For timber, aluminium and most plastics you can drill dry, though clearing swarf regularly on deep holes is still good practice.
Manufactured to DIN1869 long series specification in HSS-G (high speed steel, precision ground). The 135° split point geometry reduces thrust required on entry and minimises wandering on flat or curved metal surfaces. Ground flutes provide efficient swarf evacuation and a consistent cutting edge throughout the bit's working life. Suitable for use in hand drills, pillar drills and bench drill presses.
Reviews
There are no reviews yet.