HSS Twist Drill Bit (Fully Ground)

The Jon Bhandari Tools HSS Twist Drill Bit Set (Fully Ground) delivers professional-grade cutting precision for industrial and workshop applications. Unlike standard forged bits, these fully ground HSS bits feature precision-machined cutting edges and flutes that allow for self-centering starts without center punching. The spiraled design ensures smooth chip clearance, preventing clog-ups and reducing heat accumulation during continuous operation.
This set is suitable for drilling through alloyed and unalloyed steels, non-ferrous metals, sheet metal, plastics, and dense hardwoods. Each bit features a standard straight cylindrical shank compatible with conventional corded, cordless, and benchtop drill presses.

Warranty Type: Standard Manufacturer Limited Warranty.
Coverage: Covers manufacturing defects, material flaws, and structural anomalies under normal intended usage conditions.
Exclusions: Does not cover dulling/wear over extended time, damage caused by improper usage (e.g., impact drilling into masonry or concrete), or tip breakage resulting from side loading.

Q1: What does "Fully Ground" mean, and how does it benefit my projects?
A: "Fully ground" means the flute and cutting edges are ground directly from a solid piece of steel rather than heat-twisted. This yields tighter tolerances, sharper cutting edges, longer tool life, and cleaner, burr-free holes.
Q2: What materials can these drill bits handle?
A: They perform exceptionally well on mild steel, sheet metal, brass, copper, aluminum, hard plastics, and woods. For stainless steel or hardened metals, ensure you use lower speeds and apply cutting oil to prevent thermal wear.
Q3: What quantity and size is included in this pack?
A: The pack contains a 5-piece set with a primary 12mm size and various smaller diameters organized inside a sturdy plastic box.