Drill Bit Extension Rod Set – Square, Round & Hex Shank

Drill Bit Extension Rod & Conversion Set – Square, Round & Hexagonal Shanks

Upgrade your drilling toolkit with this versatile 3-piece Drill Bit Shank Extension Rod Set. Engineered from durable carbon steel, this adapter kit lets you seamlessly switch between hammer drills, impact drills, and water drills/wall saws — making it the go-to solution for home renovation projects and professional construction applications alike.

Whether you're drilling into concrete, brick, or masonry walls, these extension rods expand your reach and adapt to a wide range of drill accessories, giving you the flexibility to tackle any job with confidence.

Made in Mainland China.

Key Features

• Universal Compatibility: Supports connection and conversion between hammer drills, impact drills, and water drills/wall saws — enabling quick, flexible switching between tools on the job.
• Wide Application: Designed for drilling into hard materials such as concrete, brick, and masonry walls; ideal for home decoration and engineering projects.
• Extended Reach: Built-in extended adapter design increases drilling depth and accommodates different sizes of drill accessories.
• Heavy-Duty Carbon Steel Construction: Impact-resistant and wear-resistant carbon steel construction stands up to high-load drilling scenarios for long-lasting performance.
• Complete 3-Piece Set: Includes one each of square, round, and hexagonal shank extension rods with matching water drill bit adapters — ready for multiple tool interfaces right out of the box.

Specifications

• Material: Carbon Steel
• Converter Rod Outer Thread Diameter: 12.5 mm
• Converter Rod Total Length: 64 mm
• Water Drill Bit Outer Thread Diameter: 21.5 mm
• Water Drill Bit Inner Thread Diameter: 12.5 mm
• Water Drill Bit Total Length: 47 mm
• Square Shank: For hammer drills
• Round Shank: For impact drills
• Hexagonal Shank: For hex-drive drills
• Color: As shown in product images

Package Contents

• 1× Square Shank Extension Rod + Water Drill Bit Adapter
• 1× Round Shank Extension Rod + Water Drill Bit Adapter
• 1× Hexagonal Shank Extension Rod + Water Drill Bit Adapter

Important Notes

• Colors in product images may vary slightly from the actual item due to monitor brightness and lighting conditions.
• Please allow minor deviations in measurements due to manual measurement methods.

Tool Safety Resource

For best practices when using power tools and drill accessories, refer to the OSHA Power Tools Safety Guidelines to ensure safe operation on every job site.

Frequently Asked Questions

Q: What types of drills are compatible with this extension rod set?

A: This drill bit shank extension rod set is compatible with hammer drills (square shank), impact drills (round shank), and hex-drive drills (hexagonal shank), as well as water drills and wall saws via the included adapter. It covers the most common drill interfaces used in home improvement and professional construction.

Q: What materials can I drill into using these extension rods?

A: These carbon steel extension rods and adapters are designed for use with hard materials including concrete, brick, and masonry walls. They are well-suited for both home renovation tasks and heavier engineering or construction projects.

Q: What is included in the package?

A: You receive a complete set of three extension rods — one square shank, one round shank, and one hexagonal shank — each paired with a matching water drill bit adapter, giving you everything needed to connect and convert between multiple tool types.

Q: What are the key dimensions of the extension rods?

A: The converter rod has an outer thread diameter of 12.5 mm and a total length of 64 mm. The water drill bit adapter has an outer thread diameter of 21.5 mm, an inner thread diameter of 12.5 mm, and a total length of 47 mm.