Drill bit set STANLEY STA50015 — 3 pcs, 2.5 mm diameter

STANLEY STA50015 drill bit set contains three 2.5 mm diameter bits designed for precise small-diameter drilling in typical workshop and repair tasks. Each bit is 57 mm long and finished in black, intended for use with hand-held or bench drills compatible with standard twist drill shanks. The set is compact and suitable for carrying in a tool kit when small, consistent holes in metal and similar materials are required.

Advantages

The set provides three identical 2.5 mm bits to ensure repeatable hole sizes across multiple workpieces. The 57 mm length offers sufficient reach for thin to moderate thickness materials while remaining easy to control in hand-held drilling operations. The black finish helps reduce glare and may indicate a surface treatment that supports wear resistance during typical light-duty metal drilling. The small diameter allows for accurate pilot holes and fine-detail work where dimensional consistency matters.

Suitable for

• Drilling small holes in sheet metal and thin metal components
• Creating pilot holes for screws or fasteners
• Light workshop repair and installation tasks
• Model making and precise assembly work requiring 2.5 mm holes

Key specifications

• Quantity: 3 pieces
• Drill bit diameter: 2.5 mm
• Overall length: 57 mm
• Intended materials: metal and similar hard materials suitable for twist drill bits
• Finish: black

How to use

Secure the appropriate drill bit in the chuck of a compatible hand-held or bench drill, tightening the chuck to prevent slippage. Mark the drilling position and, if necessary, clamp the workpiece to prevent movement. Use an appropriate drill speed and light cutting pressure for 2.5 mm diameter holes in metal, and apply cutting fluid when drilling harder metals to reduce heat and prolong bit life. Withdraw the bit periodically to clear chips, and finish the hole as required with deburring tools.

Usage recommendations

For best results when drilling metal, start with a pilot or center punch to prevent walking, use moderate speeds with steady feed, and employ cutting fluid to extend bit life. Replace bits if they become dull to maintain hole accuracy and reduce the risk of overheating or breakage.