Overview
A magnetic core drill is a powered machine with a magnetic base that clamps to steel and a motor built to drive large-diameter core bits reliably. It’s a workshop or site tool for frequent, accurate core drilling and related tasks such as tapping and countersinking.
Core drill bits — like the Clarke TCT set here — are consumables you attach to a suitable driver. A good TCT set gives you a range of diameters for fast cutting in masonry and concrete, and suits occasional jobs or when you already have a compatible drill.
Together they’re complementary: if you rent or already own a drill press or an appropriate rotary hammer, a TCT bit set can be a cost-effective solution. If you regularly need core holes in steel or heavy concrete, a magnetic core drill delivers accuracy, holding power and safety benefits.
Below we break down the two products, their practical strengths and limitations, and when each option makes sense so you can choose the right level of investment for your projects.
Recommended
Fein KBU 35 MQW 1100W Magnetic Core Drill (230V)
Tradespeople and workshops needing reliable magnetic core drilling up to 35mm
Universal magnetic core drill for up to 35mm with a compact, powerful 1100W motor and tool-free bit changes.
Pros
- Purpose-built for stable, repeatable core drilling
- Strong magnetic base for safer anchoring to steel
- Good power-to-weight ratio for site use
- Tool-free bit changes speed workflow
- Tacho control keeps speed under load
- Versatile for tapping, countersinking and reaming as well as cores
Cons
- Higher initial cost than buying just bits or renting
- Magnet requires a steel surface to anchor — not suitable on non‑magnetic substrates
- Heavier and bulkier than handheld options for occasional users
- Limited to the machine’s maximum compatible bit diameter (35mm)
- May require additional accessories (arbors, coolant) depending on jobs
- Shop warranty, delivery and accessory inclusions can vary by retailer
/10
Overall score
Guide price: GBP 1099.00 — check current retailer price and availability before buying.
Clarke CHT600 9 Piece TCT Core Drill Bit Set
DIYers and trades needing a low-cost range of masonry/core bit sizes for occasional use
A 9-piece TCT core bit set for fast cutting in brickwork, stone and concrete with minimal breakthrough.
Pros
- Low upfront cost compared with buying a dedicated machine
- Covers multiple diameters for flexible job use
- TCT tips give longer life on abrasive masonry
- Good for quick jobs when you already have a drill
- Compact set is easy to store and transport
- Sensible option for occasional or DIY projects
Cons
- Not a machine — requires a compatible driver or arbor
- Less effective or short-lived on reinforced concrete or steel
- No magnetic base or built-in stabilisation — accuracy depends on your drill
- May need water-cooling or careful dust control for long cuts
- Set contents may not include adaptor or case — check retailer listing
- Quality and fit can vary between bits; confirm sizes before buying
/10
Overall score
Guide price: GBP 37.19 — check the retailer page for the latest price and exact set contents.
Comparison table
| Rank | Product | Best for | Price/value | Rating | CTA |
|---|---|---|---|---|---|
| #1 | Fein KBU 35 MQW 1100W Magnetic Core Drill (230V) | Tradespeople and workshops needing reliable magnetic core drilling up to 35mm | Guide price: GBP 1099.00 — check current retailer price and availability before buying. | 9.7 | Check latest price |
| #2 | Clarke CHT600 9 Piece TCT Core Drill Bit Set | DIYers and trades needing a low-cost range of masonry/core bit sizes for occasional use | Guide price: GBP 37.19 — check the retailer page for the latest price and exact set contents. | 8.7 | View product page |
Detailed reviews
#1 Fein KBU 35 MQW 1100W Magnetic Core Drill (230V)
The FEIN KBU 35 MQW is a compact magnetic core drill designed for professional use where consistent, accurate holes are required. It combines a weight-optimised body with an FEIN 1100W motor and tacho electronics for stable speed under load. The magnetic base provides strong holding power for drilling to the rated depths, while features such as clockwise/anti-clockwise operation, electronic speed control and a 3/4" Weldon fitting make it versatile for core drilling, twist drilling, tapping and reaming. It’s aimed at users who need a dedicated machine for on-site and workshop work rather than a casual, occasional tool.
Key features
- 1100W input motor with tacho electronics for speed stability
- Industry-standard 3/4" Weldon fitting (MT2 mounting)
- Magnetic holding power rated around 10000N with 175 x 80mm base
- Tool-free core bit changing and 260mm total stroke range
- Clockwise/anti-clockwise operation and electronic speed setting
- Weight approx. 11.0kg and 4m cable for flexible positioning
#2 Clarke CHT600 9 Piece TCT Core Drill Bit Set
The Clarke CHT600 is a 9-piece TCT core drill bit set designed for cutting clean holes in masonry, stone and concrete. TCT (tungsten carbide tip) construction gives improved life and faster cutting than plain HSS in abrasive materials. This set targets users who need a range of common diameters without buying single large bits, and is a sensible consumable choice for occasional core drilling or for those who already own a compatible drill and arbor. It’s a cost-effective way to prepare core holes in building materials, but remember bit and arbor compatibility with your machine before buying.
Key features
- Nine TCT-tipped core bits covering a range of common diameters
- Designed for masonry, stone and concrete cutting
- Aimed at fast cutting with minimal break-through
- TCT tips for greater wear resistance versus plain HSS
- Supplied as a set for multiple hole-size needs
- Compact, lightweight set suitable for jobsite boxes
Buying guide
Decide by frequency and material. If you drill cores regularly, especially into steel-work or thick reinforced concrete, a magnetic core drill is the safer, more accurate investment — it clamps to metal and gives far better control for large holes. If you only need occasional holes in brick, block or thin concrete and already own a suitable drill or hammer, buy a quality TCT or carbide core bit set instead. Check bit shank and arbor fitment before buying: machine spindles and core bit arbors must match. For magnetic drills, consider magnetic holding power, stroke length, motor power and compatible bit diameter. Always allow water-cooling options if you’ll be drilling wet, and use appropriate PPE, anchor the magnet correctly and follow safe drilling practice on site.
FAQs
Can I use TCT core bits in a magnetic core drill?
Yes, provided the bit is compatible with the drill’s arbor or you fit the correct adaptor. Check diameter limits and the bit’s recommended application (masonry vs metal).
When should I choose a magnetic core drill over handheld drilling?
Choose a magnetic core drill if you need accuracy, repeatability and safety on steel or large concrete cores, or when holes are frequent. For one-off small holes in masonry a handheld drill with the right core bit may be enough.
Our recommended choice
For tradespeople and workshops that need reliable, repeatable core drilling into metal and concrete, the FEIN KBU 35 MQW magnetic core drill is the better long-term buy. For DIYers or occasional jobs where you already have a compatible drill, the Clarke TCT 9-piece set is a low-cost, practical choice.