The Faithfull 19 Piece HSS Jobber Drill Bit Set is a professional-grade set featuring commonly use...The Faithfull 19 Piece HSS Jobber Drill Bit Set is a professional-grade set featuring commonly used metric sizes. These quality roll-forged flute twist drills are manufactured from HSS in accordance with the DIN338 standard and finished with a black oxide coating. Designed primarily for cutting alloy, carbon, and hardened alloy steels, they are also versatile enough for drilling into plastic, timber, chipboard, and plywood. The set is supplied in a robust, easy-to-use plastic case with a flip-action transparent lid, allowing for secure storage and quick identification of contents. The included sizes are 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, and 10mm.
The Faithfull 19 Piece HSS Jobber Drill Bit Set is designed for professional contractors and DIY enthusiasts who require a reliable range of metric drill bits for diverse materials. Its key benefit is the high-quality roll-forged HSS construction, which provides durability when cutting through metals and wood alike. A notable caveat is that while these bits are versatile for various projects, they are primarily optimized for steel and wood, and users should exercise caution to avoid overheating them when drilling through particularly hard alloys.
All features
Model Part Number
PTDFAIM19PSET
Brand
HSS
Extended Product Information
FAQs
Are these bits suitable for masonry or concrete?
No, these are HSS metal-cutting bits. They are not designed for masonry and will dull instantly if used on concrete or brick.
Do I need to sharpen these bits?
While HSS bits can be sharpened, it requires a dedicated drill bit sharpener or specific grinding skills. For most users, replacement is more practical.
What is the largest drill size included?
The set includes a 10.0mm drill bit as the largest size.
Is the storage case waterproof?
The case is designed for secure storage and organization, but it is not waterproof. Keep it in a dry tool chest or workshop environment.
Can I use these in a hand-crank drill?
Yes, as long as the hand drill chuck is capable of securing the shank size of the specific bit you are using.
Troubleshooting
Bit is burning the material instead of cutting
Reduce the drill speed (RPM) and ensure the bit is sharp; if it is dull, it should be replaced.
Small drill bit snaps frequently
Ensure you are applying light, steady pressure and that the bit is not wobbling in the chuck.
Bit 'walks' or skids on the surface
Use a center punch to create a small indentation before starting to provide a guide for the bit tip.
Pros and Cons
Pros
Covers a wide range of common metric sizes
Durable HSS material provides professional performance
Includes a robust, easy-to-organize storage case
Black oxide coating reduces friction and heat buildup
Cons
Not suitable for heavy-duty industrial masonry applications
Requires careful speed management to avoid snapping smaller bits
Manual organization required to keep bits in correct slots
Setup, Compatibility & Care
To ensure the longevity of your Faithfull HSS bits, follow these maintenance guidelines:
Compatibility: These bits are compatible with all standard 3-jaw drill chucks found on corded and cordless power drills.
Drilling Technique: Always start with a center punch when drilling into metal to prevent the bit from walking. Use a low RPM for larger bits (8mm-10mm) and a higher RPM for smaller bits (1mm-3mm).
Lubrication: When drilling into metal, always apply a small amount of cutting oil to reduce friction and dissipate heat, which significantly extends the life of the bit.
Storage: After use, wipe the bits clean of metal shavings and dust. Store them in the provided case to prevent moisture-induced surface oxidation.