HSS Roll Forged Jobber Drill Bit Set 19pc 1–10mm

This 19-piece HSS roll forged jobber drill bit set covers every common size from 1mm to 10mm in 0.5mm steps, giving you a full working range in one case. These are general-purpose hss jobber drill bits made to the DIN338 standard, which means consistent geometry and reliable performance across the set. Whether you are working on a bench drill or using a hand-held rotary drill, these bits are a practical everyday choice for metal, plastic and similar materials.

Roll forging is the manufacturing process that gives these bits their strength. The flutes are formed under heat and pressure rather than cut from raw stock, which aligns the grain structure of the steel along the length of the bit. The result is a bit that resists flexing and is less prone to snapping under load — useful when you are pushing through thicker sections of steel or working at awkward angles.

What the HSS Roll Forged Jobber Drill Set Covers

The 118° tip angle is the standard point geometry for general metalworking and is well suited to a wide range of materials. It cuts cleanly through mild steel, cast iron, aluminium, brass, copper and most engineering plastics without the need for a pilot hole on smaller sizes. The angle also makes it easier to locate the bit on the workpiece surface without wandering, which matters when accuracy counts.

The black oxide finish does two jobs. It reduces friction slightly as the bit enters the material, and it provides a degree of surface protection against rust during storage. It is not a hard coating like TiN, but for a general-purpose set at this price point, it does the job. Keep the bits clean and dry between uses and they will last considerably longer.

Parallel Shank and Chuck Compatibility

All 19 bits have a parallel shank, which means they fit directly into any standard 3-jaw drill chuck, whether on a hand drill, cordless drill driver, or a bench or pillar drill. There are no reduced shanks in the set, so what you see on the case label is what goes into the chuck.

The set comes supplied in a fold-out plastic case that holds each bit in its own numbered slot. It is a small thing, but having the sizes clearly organised saves time on site and stops bits rolling around loose in a toolbox. The case closes securely, which means the set travels well in a bag or van without bits going missing.

For anyone needing a dependable set of hss jobber drill bits that covers the full everyday range without spending a lot, this 19-piece set is a straightforward choice. It is not a premium cobalt set for stainless or hardened steel, but for general fabrication, maintenance work, joinery fixings and plastics, it covers the vast majority of jobs you will encounter.