Drill Bit Smart HSS straight shank 9 mm set 10 pcs (24-090)

Set of 10 Smart HSS drill bits with straight (cylindrical) shanks, 9 mm diameter, model 24-090. These high-speed steel (HSS) bits are designed for general-purpose drilling in metal, wood and plastics. The straight shank allows secure clamping in standard drill chucks and bench drills, making the set suitable for common workshop, maintenance and DIY tasks that require mid-size holes with consistent cutting performance.

Advantages

The HSS material provides good heat resistance and edge retention during medium-speed drilling operations, reducing the need for frequent re-sharpening. A uniform 9 mm diameter across all ten bits ensures repeatability when multiple holes of the same size are required. The straight shanks are compatible with a wide range of hand and machine chucks, simplifying tool changes and reducing setup time.

Suitable for

• Drilling through mild and non-hardened steels
• Woodworking tasks requiring 9 mm holes
• Plastic and composite material drilling
• General workshop and maintenance operations
• DIY projects and household repairs

Key specifications

• Material: high-speed steel (HSS)
• Shank type: straight (cylindrical) shank
• Diameter: 9 mm
• Quantity: 10 pieces per set
• Suitable for use in standard drill chucks and bench drills

How to use

Select a suitable drill and clamp the straight shank securely in the chuck. For metal drilling, mark the drilling point and, where appropriate, use a centre punch to prevent wandering. Apply cutting fluid when drilling steel to reduce heat and improve tool life. For wood and plastics, use moderate feed rates and clear chips frequently to avoid clogging. Maintain a steady, controlled feed and withdraw the bit periodically on deeper holes to clear chips and cool the cutting edge.

Usage recommendations

Use appropriate personal protective equipment, such as safety glasses and hearing protection. Match drill speed and feed to the material: lower speeds for harder metals, higher speeds for wood and plastics. Store the bits in a dry place to prevent corrosion and inspect cutting edges before use; re-sharpen or replace worn bits to maintain clean holes and safe operation.