Fully ground HSS M2 long series drill bit with 135 degree split point tip from 3mm upwards. No centre punch needed, no walking, faster penetration. Ideal for deeper drilling applications where a standard jobber bit falls short.
Available options and pricing for HSS GROUND Pro LONG Series Drill Bit - M2, with quantity selectors and a running total
Size
QTY
SKU
Price
QTY
Total
2.0mm
10
HSSGL2
£7.57£9.08
—
2.5mm
10
HSSGL25
£8.17£9.80
—
3.0mm
10
HSSGL3
£8.73£10.48
—
3.2mm
10
HSSGL32
£9.70£11.64
—
3.5mm
10
HSSGL35
£10.13£12.16
—
4.0mm
10
HSSGL4
£10.73£12.88
—
4.2mm
10
HSSGL42
£12.26£14.71
—
4.5mm
10
HSSGL45
£13.08£15.70
—
4.8mm
10
HSSGL48
£13.86£16.63
—
5.0mm
10
HSSGL5
£13.86£16.63
—
5.5mm
10
HSSGL55
£19.41£23.29
—
6.0mm
10
HSSGL6
£19.41£23.29
—
6.5mm
5
HSSGL65
£11.78£14.14
—
7.0mm
5
HSSGL7
£13.60£16.32
—
8.0mm
5
HSSGL8
£15.75£18.90
—
9.0mm
5
HSSGL9
£20.86£25.03
—
10.0mm
5
HSSGL100
£22.56£27.07
—
3.0mm
1
HSSGLR3
£1.23£1.48
—
3.5mm
1
HSSGLR35
£1.45£1.74
—
4.0mm
1
HSSGLR4
£1.51£1.81
—
4.5mm
1
HSSGLR45
£1.69£2.03
—
5.0mm
1
HSSGLR5
£2.04£2.45
—
5.5mm
1
HSSGLR55
£2.38£2.86
—
6.0mm
1
HSSGLR6
£2.68£3.22
—
6.5mm
1
HSSGLR65
£2.77£3.32
—
7.0mm
1
HSSGLR7
£3.11£3.73
—
8.0mm
1
HSSGLR8
£3.87£4.64
—
The HSS ground long series drill bit is the go-to choice when a standard jobber length just won’t reach. Made from M2 high speed steel and fully ground throughout, these bits cut cleanly through mild steel, aluminium, brass, and most general engineering materials without the rough finish you get from cheaper rolled alternatives. The extended flute length gives you the extra reach needed for deep-hole work, fabrication jobs, and situations where you’re drilling through thick sections or at an offset.
From 3mm upwards, every bit in this range features a 135 degree split point tip. That detail matters more than it sounds. A standard drill tip tends to skate across the surface until it finds somewhere to bite, which is why half the world reaches for a centre punch before drilling anything. The split point cuts on contact, so the bit locates itself immediately without wandering. No punch, no pilot hole, no frustration.
Where the HSS Ground Long Series Drill Bit Earns Its Keep
Long series bits are a staple in fabrication shops, engineering workshops, and on site wherever you’re working through box section, angle iron, or plate that a stubby bit can’t comfortably reach. They’re also useful when you need to drill at a slight angle and require more of the shank clear of the workpiece. Electricians occasionally reach for them when chasing out deeper channels or drilling through thick timber and board in one pass.
The M2 steel grade holds an edge well under heat. It won’t last forever on stainless or hardened materials, but for everyday steel, aluminium, and similar, it performs consistently without needing constant resharpening. Fully ground geometry means the cutting edges are accurate from the start, which shows up in hole quality and dimensional accuracy.
Available in a wide range of sizes from 2mm up to 10mm, with single bits or multipacks to suit both occasional use and heavy workshop demand. At this price point, keeping a few spares on the shelf makes sense.
Pro Tip: When using long series bits freehand, reduce your feed pressure slightly compared to a standard jobber bit as the extra length introduces more flex and increases the risk of breakage, especially on smaller diameters under 4mm.
Long series HSS drill bits are used across fabrication, site work, and workshop engineering wherever standard length bits cannot reach. Common applications include drilling through box section steel, angle iron, thick plate, and multi-layer material stacks. They're regularly used in HVAC installation, general metalwork, and mechanical engineering tasks where hole depth or clearance is the limiting factor.
The 135 degree split point makes them a practical choice for any job where surface marking before drilling isn't convenient, including production work where speed matters and stopping to centre punch every hole adds up.
Best For
Deep hole drilling in steel and aluminium
Fabrication and structural metalwork
Engineering and workshop applications
Drilling box section and thick plate
Jobs where standard jobber length falls short
Compatible With
Mild steel
Aluminium
Brass
Copper
Cast iron
Timber and board (general use)
Key Specifications
M2 high speed steel construction
Fully ground geometry
135 degree split point tip (3mm and above)
Extended flute length vs standard jobber
Available from 2.0mm to 10.0mm
Single bits or multipacks available
Not suitable for: Not recommended for stainless steel, hardened steel, or masonry without appropriate coatings or specialist grades. The extended length also makes sub-3mm sizes more prone to breakage under heavy-handed use.
Fit the bit securely into your drill chuck and check it runs true before starting. On harder materials, use a cutting fluid or oil to reduce heat build-up and extend edge life. Let the bit do the work rather than forcing it.
From 3mm upwards the split point locates on contact, so no centre punch is needed. Start at a moderate speed and increase feed pressure gradually once the tip has engaged. On longer through-holes, withdraw the bit periodically to clear swarf and prevent binding.
Select the correct diameter for your application and check the bit for any visible damage before use
Secure the bit firmly in the chuck, ensuring it runs true with no wobble
For steel and aluminium, apply cutting fluid or oil to the tip before starting
Position the drill perpendicular to the workpiece and allow the split point to locate on contact without a centre punch
Start drilling at a moderate speed with light feed pressure until the tip is fully engaged
Increase feed pressure steadily and maintain consistent speed throughout the cut
Withdraw the bit periodically on deeper holes to clear swarf and prevent heat build-up
Reduce feed pressure as the tip breaks through to avoid snatching
What is the difference between a long series and a standard jobber drill bit?
Long series bits have an extended flute and overall length compared to standard jobber bits. This gives you more reach when drilling through thick material or in situations where the drill body needs to clear an obstruction. The cutting geometry is essentially the same, but the extra length allows access that a jobber bit cannot manage.
Do I need to centre punch before using these drill bits?
Not from 3mm upwards. The 135 degree split point tip cuts on contact and self-locates without skating across the surface. Below 3mm the tip geometry differs, so centre punching remains good practice on smaller sizes to prevent the bit from wandering.
Can these be used in a hand drill or do they require a pillar drill?
They can be used in a handheld drill, though a pillar drill gives better results on precision work because it keeps the bit running at a consistent angle. When using freehand, be especially careful with smaller diameters as the long series length increases flex and the risk of snapping if the bit is forced or angled during the cut.
Manufactured from M2 grade high speed steel, which offers a good balance of hardness, toughness, and heat resistance for general metalworking applications. The fully ground construction means the flutes, lands, and cutting edges are precision formed rather than rolled and finished, resulting in tighter tolerances and a cleaner cutting action. The 135 degree split point angle reduces thrust force and improves self-centring compared to the conventional 118 degree tip.
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