Drill bit STHOR 21703, 75 mm length, single piece

STHOR 21703 drill bit, 75 mm length, single piece is a compact drill bit intended for drilling precise, shallow holes in materials such as wood, soft plastics and, depending on tip geometry, fragile surfaces like glass and ceramics. Its 75 mm overall length makes it suitable for repair, assembly and precision tasks where a short, easy-to-control bit is required. The product is supplied as a single unit and fits standard drill chucks for handheld and bench drilling applications.

Advantages

The STHOR 21703 offers a compact design that improves control and stability during short drilling operations. Constructed with a wear-resistant cutting element, it is engineered to maintain cutting performance and edge integrity under normal use. The bit’s geometry is optimised for clean holes with reduced risk of chipping when used with appropriate feed rates and drilling technique. Its single-piece supply allows easy selection and replacement for specific tasks.

Suitable for

• Shallow hole drilling in wood and soft plastics
• Repair and assembly work where a short drill length is required
• Precision and finishing tasks that require controlled penetration
• Drilling in fragile surfaces such as glass, ceramics and porcelain when used with correct technique and coolant

Key specifications

• Overall length: 75 mm
• Sold as: single piece
• Compatible with standard drill chucks
• Recommended materials: wood, soft plastics, glass, ceramics, porcelain (dependent on tip geometry and drilling technique)
• Tip geometry optimised for clean hole formation and reduced chipping in brittle materials

How to use

Mount the STHOR 21703 drill bit securely in a compatible drill chuck and set the drill to an appropriate speed for the material being worked. For wood and plastics use moderate speed and steady feed pressure. When drilling glass, ceramics or porcelain, begin with a slow speed, apply light, consistent pressure, and use cooling or lubrication if possible to reduce heat and prevent cracking. Withdraw the bit periodically to clear debris and maintain a clean cutting edge. Ensure appropriate clamping or support of the workpiece to avoid movement.

Usage recommendations

Use protective eyewear and gloves when drilling. For brittle materials such as glass and ceramics, use low speed, light pressure and a coolant or lubricant; consider backing the workpiece with sacrificial material to prevent breakout. Inspect the bit for wear before use and replace when cutting performance degrades.