Faithfull
Faithfull HSS Jobber Drill Bit 4.20mm OL:78mm WL:43mm FAIJ420
Model FAIJ420
Best price
Where to buy
| Retailer | Price | Availability | Visit |
|---|---|---|---|
| Cheapestchecked yesterday | £0.67 | In stock | Visit Blueperry agriculture (UK) (opens in a new tab) |
 checked within the hour | £0.95£1.02 | In stock | Visit Tooled Up (opens in a new tab) |
 retailer's price from 16 Jul 2026 | £1.53 | In stock | Visit Blueperry Tool & Builders Merchants (UK) (opens in a new tab) |
Prices exclude delivery. We may earn a commission if you buy through these links, which never affects the ranking above — it is always cheapest first.
Price history
Full price historyToday's price is below the 53-day average, and 3% above the lowest we have seen.
About this product
This Faithfull 4.2mm HSS jobber drill bit is designed for precision drilling where a specific diameter between standard sizes is needed, such as creating clearance holes for M4 fixings or enlarging existing holes. It is made from high-speed steel to DIN 338 standard, giving reliable performance across materials.
The straight shank fits standard chucks on both hand and power drills, and the bit can be used on wood and metal, with a cutting lubricant recommended for metal to improve cutting and extend life. Overall length is 78mm with a working length of 43mm. It is supplied in packs of 10.
Features and Benefits
- :
- 4.2mm diameter for specialist precision drilling
- High-speed steel construction ensures longevity
- DIN 338 standard manufacture
- Versatile wood and metal drilling capability
- Straight shank for universal chuck compatibility
- Supplied in packs of 10 Specifications: Tip Diameter (mm): 4.2 Working Length (mm): 43 Overall Length (mm): 78 Pack Qty.: 1
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