Drill bit set Topex 57H196 titanium-coated cylindrical bits 4 mm, 5 mm, 8 mm, 10 mm

Topex 57H196 is a compact set of titanium-coated cylindrical drill bits in diameters 4 mm, 5 mm, 8 mm and 10 mm. Designed for general-purpose drilling in metal, wood and plastics, these bits combine a hardened steel core with a titanium coating to increase surface hardness and reduce friction during cutting. The set covers common diameters used in workshop repairs, installation tasks and home DIY projects.

Advantages

The titanium coating improves wear resistance and extends tool life compared with uncoated bits, while reducing heat build-up and friction at the cutting edge. Cylindrical shanks ensure compatibility with standard chucks. The selection of four frequently used diameters gives flexibility for a range of through-holes and pilot holes without requiring multiple individual purchases.

Suitable for

• Drilling holes in mild and soft steels, aluminium and non-ferrous metals
• Woodworking tasks including joinery, cabinetry and fixture installation
• Drilling holes in plastic components and composite panels
• General home repairs, mounting brackets and furniture assembly

Key specifications

• Material: high-speed steel core with titanium surface coating
• Shank type: cylindrical (straight) shank for standard chucks
• Included diameters: 4 mm, 5 mm, 8 mm, 10 mm
• Intended materials: metal, wood, plastics
• Finish: titanium coating for reduced friction and improved wear resistance

How to use

Select the drill bit diameter appropriate for the hole required and secure it in the drill chuck, ensuring a firm, centered grip. For metal drilling, mark the drill point and, if necessary, use a center punch to prevent walking. Start at low to moderate speed with steady pressure, increasing speed as the bit establishes the hole. Use cutting fluid when drilling ferrous metals to reduce heat and extend bit life. For wood and plastics, use controlled speed and avoid excessive heat by withdrawing the bit periodically to remove chips.

Usage recommendations

Use appropriate personal protective equipment, including safety glasses and hearing protection. Match drill speed to material hardness: lower speeds for metals, higher speeds for wood and plastics. Replace bits when cutting performance degrades or when significant wear on the coating is visible.