Drill bit set Bosch V-Line 91-piece TIN coated — assorted sizes for metal, wood, plastic

Bosch V-Line 91-piece drill bit set with TIN coating offers a comprehensive selection of drill sizes for general-purpose drilling in metal, wood and plastic. The set is supplied in a compact, organized case that keeps bits sorted and easy to transport. Titanium nitride (TIN) coating increases surface hardness and wear resistance, extending service life and maintaining cutting performance across repeated tasks.

Advantages

The TIN coating delivers higher surface hardness and improved abrasion resistance compared with uncoated steel bits, reducing wear during use. A broad range of diameters covers common drilling needs for construction, maintenance and hobby projects, so users can select the correct size without stopping to search for a replacement. Bits are arranged in a durable case with clear sizing for quick selection and secure storage during transport.

Suitable for

• Drilling through mild steel, sheet metal and aluminum
• Woodworking tasks including softwood and hardwood
• Plastic and composite materials
• General repair, installation and assembly work

Key specifications

• Set contents: 91 drill bits in assorted metric sizes covering small to larger diameters suitable for everyday use
• Coating: Titanium nitride (TIN) for increased surface hardness and wear resistance
• Material: High-speed steel core for cutting stability and heat resistance
• Case: Compact, molded storage case with labeled positions for each bit
• Application: Designed for drilling in metal, wood and plastic

How to use

Select the correct drill bit size for the hole required and install it securely in the drill chuck. Start drilling at low speed to establish the pilot entry point, then increase speed appropriate to the material—slower for metals, faster for wood and plastic—while applying steady, moderate pressure. Use cutting fluid or lubricant when drilling tougher metals to reduce heat buildup and prolong bit life. After use, allow bits to cool before returning them to the storage case to avoid moisture condensation and potential corrosion.

Usage recommendations

For best results when drilling metal, clamp the workpiece, mark the drilling point, and use a center punch to prevent bit wandering. Replace bits that show visible wear or chipping; TIN coating improves durability but does not make bits immune to damage. Store the set in a dry environment and clean bits after use to maintain performance.