7-Piece Brass Mini Drill Chuck Set – 2.35mm Collet Adapter

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

Upgrade your rotary tool or micro motor with this precision-crafted 7-piece brass mini drill chuck set. Designed for 2.35mm electric motor shafts, this kit transforms a small motor into a fully functional mini electric drill — perfect for hobbyists, model makers, jewelers, PCB workers, and DIY enthusiasts who demand accuracy in tight spaces.

Made in Mainland China.

Key Features

• Complete 7-Piece Kit: Includes 1 brass drill chuck shaft, 1 L-shaped small wrench, and 2 fixing screws — everything you need to get started right away.
• High-Quality Brass (Copper) Construction: Durable gold-tone brass body resists corrosion and provides reliable grip for drill bits and collets.
• Wide Collet Compatibility: Fits drill bit sizes: 0.5mm, 1.0mm, 1.5mm, 2.5mm, and 3.0mm collets.
• Self-Tightening Mini Chuck: M8×0.75 thread with a side screw hole (M3 screw) for securing the steel shaft firmly in place.
• Multiple Shaft Apertures: Tail aperture options of 2.0mm, 2.35mm, 3.17mm, and 5.0mm for broad motor compatibility.
• Compact Dimensions: ~10mm diameter, ~23.5mm total length — lightweight at approximately 8g.

Specifications

• Material: Brass (Copper)
• 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
• Diameter: ~10mm
• Weight: ~8g
• Color: Gold
• Country of Origin: Mainland China

What's in the Box?

• 1× Brass Drill Chuck Shaft
• 1× L-Shaped Small Wrench
• 2× Fixing Screws

Perfect For

• Micro motor drill conversions
• Jewelry making and fine metalwork
• PCB drilling and electronics prototyping
• Model building and hobby crafts
• Woodcarving and engraving

Looking for more workshop and DIY tools? Check out the Air Compressor Pressure Gauge 0-10/0-12/0-25 Bar | DIY Tool and the Electromagnetic Induction Tester – Coil & Circuit Fault Detector to round out your toolkit.

Note: Actual color may vary slightly from images due to monitor brightness and lighting conditions. Please allow minor measurement tolerances (±0.1mm).

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Frequently Asked Questions

Q: What motor shaft size does this mini drill chuck adapter fit?

A: This brass mini drill chuck is designed primarily for 2.35mm electric motor shafts. However, the tail aperture options of 2.0mm, 2.35mm, 3.17mm, and 5.0mm make it compatible with a variety of small motor shafts, giving you flexible usage across different micro drill setups.

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

A: The 7-piece set supports collet sizes of 0.5mm, 1.0mm, 1.5mm, 2.5mm, and 3.0mm. This range covers most micro drilling needs, from delicate PCB work to model crafting and jewelry making.

Q: How do I secure the chuck onto the motor shaft?

A: The chuck features a side screw hole designed for an M3 set screw (included). Simply slide the motor shaft into the tail aperture and tighten the set screw using the included L-shaped wrench to firmly lock it in place. The self-tightening M8×0.75 thread mechanism provides a secure and stable connection during use.