HSS-G PRO Fully Ground Drill Bit Sets – Timco

The Timco HSS ground drill bit set is one of those things you only appreciate once you’ve used a properly made bit after years of putting up with cheaper alternatives. These are fully ground from solid M2 high-speed steel, which means the geometry is consistent across every single flute rather than pressed or rolled to shape. That matters more than most people think.

M2 tool steel sits in a well-established sweet spot for general metal drilling. It holds an edge well under heat, which is exactly what you need when you’re pushing through mild steel, structural sections, or dense sheet materials without stopping every thirty seconds to let things cool down. The heat resistance here is genuinely useful, not just something to put on the box.

Where the Timco HSS-G Pro Set Earns Its Keep

The 135-degree split point tip is standard on these from 3mm upwards, and it makes a real practical difference. The self-centring geometry means the bit starts cutting immediately rather than skating around the surface. On site, that translates to skipping the centre punch on most jobs and getting on with it. Faster penetration, cleaner entry, less fuss.

Dimensional accuracy is the other thing worth noting. Fully ground bits hold tighter tolerances than rolled alternatives, so when you need a 6mm hole for a 6mm bolt, you get a 6mm hole. In fabrication, box work, or any situation where things have to fit together precisely, that consistency pays off.

Two Sizes to Choose From

The 19-piece set covers 1mm to 10mm in 0.5mm increments, which handles the majority of everyday metal drilling. The 25-piece set extends that range to 13mm, useful if you’re regularly drilling clearance holes for M10 or M12 fixings, or working with larger section material. Both sets are presented in a hard case with individual indexed slots, so you know instantly what’s missing and nothing rattles around loose in the van.

For tradespeople drilling non-alloy metals day to day, the Timco HSS-G Pro drill bit set is a reliable, well-specified choice that doesn’t overcomplicate things.