7-Pc Brass Mini Drill Chuck Collet Set – 2.35mm Motor Shaft

7-Piece Brass Mini Drill Chuck Collet Set for Electric Motor Shafts

Upgrade your rotary tool or mini electric drill with this precision-engineered 7-piece brass drill chuck collet set. Designed to fit 2.35mm motor shafts, this self-tightening chuck adapter kit lets you securely connect small-diameter drill bits to electric motors — perfect for hobbyists, model makers, jewelers, PCB workers, and DIY enthusiasts.

Made from high-quality copper (brass), these mini drill chucks deliver reliable grip and smooth operation. The M8×0.75 thread ensures a stable connection, while the included L-shaped wrench and set screws make installation quick and tool-free. Made in Mainland China.

Key Features

• 7-piece set: Includes collets in multiple sizes — 0.5mm, 1.0mm, 1.5mm, 2.5mm, and 3.0mm — plus a chuck and accessories
• 2.35mm shaft bore: Fits standard 2.35mm electric motor shafts commonly used in rotary and mini drill tools
• Self-tightening design: M8×0.75 thread chuck grips drill bits firmly for precise, wobble-free operation
• High-quality brass construction: Durable copper material resists wear and provides excellent machining accuracy
• Compact dimensions: Approx. 10mm diameter × 23.5mm total length; lightweight at only ~8g
• Versatile compatibility: Tail aperture options of 2.0mm, 2.35mm, 3.17mm, and 5.0mm suit a range of motor shaft sizes
• M3 set screw fixing: Side screw hole with M3 screw locks the chuck firmly onto steel motor shafts

Specifications

• Material: Brass (Copper)
• Color: Gold
• Chuck hole diameter: 2.35mm (approx.)
• Collet sizes included: 0.5mm, 1.0mm, 1.5mm, 2.5mm, 3.0mm
• Thread type: M8×0.75
• Total length: 23.5mm
• Outer diameter: ~10mm
• Weight: ~8g
• Origin: Made in Mainland China

What's in the Box

• 1× Brass drill chuck shaft
• 1× L-shaped hex wrench
• 2× Set screws
• Collet inserts (0.5 / 1.0 / 1.5 / 2.5 / 3.0mm)

Great for Use With

This collet chuck set is ideal for anyone building or repairing small rotary tools, electric drills, CNC engravers, or DIY micro-drilling setups. Pairs well with other precision workshop accessories like our Air Compressor Pressure Gauge – DIY Tool or handy crafting tools like the 18 Pc Basswood Carving Blocks – Whittling Wood Kit. If you enjoy detailed hobby work, also check out our Garden Pruner Shears for Bonsai & Fruit Trees.

Note: Monitor color settings may cause slight color variation from product images. Please allow ±0.5mm manual measurement tolerance on all stated dimensions.

Learn more: OSHA guidance on hand and power tools

Frequently Asked Questions

Q: What motor shaft size does this brass drill chuck collet fit?

A: This mini drill chuck is designed for 2.35mm motor shafts, which are standard on most small rotary tools and electric mini drills. The tail aperture options (2.0mm, 2.35mm, 3.17mm, 5.0mm) allow it to accommodate a range of motor shaft diameters.

Q: What drill bit sizes can I use with this collet set?

A: The included collets support drill bit shank diameters of 0.5mm, 1.0mm, 1.5mm, 2.5mm, and 3.0mm, making this set suitable for a wide variety of micro and mini drill bits used in PCB work, jewelry making, model building, and precision DIY projects.

Q: Is this drill chuck compatible with Dremel-style rotary tools?

A: Yes — this 2.35mm brass mini drill chuck collet is compatible with Dremel-style and other rotary tools that use a 2.35mm shaft. The M8×0.75 self-tightening thread and M3 set screw provide a secure, stable fit for accurate drilling work.