Drill Bit Set Black & Decker A7188-XJ 50 pcs 1 cm for Metal Wood

The Black & Decker A7188-XJ 50-piece drill bit set contains 50 drill bits with a nominal diameter of 1 cm, designed for use in metal and wood. The set is intended to provide a selection of bits for general drilling tasks where a larger-diameter hole is required. Construction and material choices focus on durability and dimensional stability during repeated use with corded or cordless drills.

Advantages

The set offers a uniform 1 cm diameter across all pieces for consistent hole size and simplified bit selection. Bits are suitable for both metal and wood, reducing the need to change to dedicated specialty bits for common tasks. The components are produced to withstand typical torque and heat generated during drilling, maintaining edge geometry for reliable penetration and reduced walk on the work surface.

Suitable for

• Drilling holes in sheet metal, metal components and structural metalwork
• Drilling holes in soft and hardwoods for joinery and furniture assembly
• Installing large-diameter fasteners, dowels and conduit entries
• General workshop and site tasks where consistent 10 mm holes are required

Key specifications

• Quantity: 50 pieces
• Nominal diameter: 1 cm (10 mm)
• Compatible materials: metal and wood
• Intended use: handheld corded and cordless drills
• Design emphasis: durability and consistent hole size

How to use

Select a 1 cm drill bit from the set and secure it in the drill chuck according to the drill manufacturer’s instructions. Mark the drilling position on the workpiece and, if required, create a pilot mark or centre punch on metal to prevent bit wandering. Use appropriate drill speed and feed pressure for the material: lower speeds and steady pressure for metal, moderate to higher speeds for wood. Apply cutting fluid or lubricant when drilling metal to reduce heat and extend bit life. Withdraw the bit periodically to clear chips, and allow the bit to cool if it becomes hot.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses and hearing protection. Secure the workpiece with clamps to prevent movement. Verify drill bit condition before use and replace bits that show significant wear, chipping, or reduced cutting performance to maintain hole quality and operator safety.