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ACTUAL PRODUCT / 01Electric Grinder-102 — complete set and storage case

Cordless Rotary Tools

Electric Grinder-102

D-102 Cordless Electric Engraving Pen – 18000RPM Mini Rotary Tool Kit

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OEM / ODM:Logo, color, packaging and configuration options are available for qualified orders.
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Product overview

Manufacturer product information

Logo, color, packaging and configuration options are available for qualified orders.

The D-102 electric engraving pen is a compact and powerful mini rotary tool designed for precision engraving, polishing, and DIY applications. Equipped with a high-speed 18000RPM motor and 3-speed adjustable control, it delivers stable performance for working on metal, glass, wood, plastic, and jewelry.

Featuring a lightweight aluminum alloy body (only 40g), this cordless engraving tool ensures comfortable one-hand operation and high accuracy. The Type-C fast charging system supports full charge in about 30 minutes and allows use while charging, improving efficiency for continuous tasks.

The set includes 30 high-speed steel grinding heads, supporting customization of various shapes and materials, and flexibly responding to different processing scenarios.

Perfect for DIY enthusiasts, jewelry makers, repair technicians, and eCommerce sellers, the D-102 supports full OEM/ODM customization, including logo, colors, packaging, and accessories.

👉 Ideal choice for bulk buyers looking for a reliable electric engraving pen supplier with factory-direct pricing and fast delivery.

Electric Grinder-102

Technical specifications

Product data from the supplied model document; current commercial terms are confirmed with each quotation.

Model
D-102
Product Size
119 × 16 mm
Net Weight
40 g
Package Weight
200 g
Packaging Size
200 × 133 × 33 mm
Rated Voltage
3.7V / 4V (DC)
No-load Speed
18000 RPM
Max Torque
55 g·cm
Battery Type
Polymer Lithium Battery
Battery Capacity
300 mAh
Charging Port
Type-C
Charging Input
5V-1A
Charging Time
~30 minutes
Working Mode
Can be used while charging
Speed Levels
3-speed adjustable
Motor Type
Carbon brush motor
Collet Size
2.35 mm metal chuck
Operating Temperature
Charging: 0–45°C / Discharge: -20–45°C

Applications & buyers

  • Amazon / eCommerce sellers (DIY tools category)
  • Hardware wholesalers & distributors
  • Jewelry manufacturers & repair shops
  • Craft tool brands (OEM/ODM)
  • Promotional gift suppliers (custom engraving solutions)
  • The D-102 engraving pen is widely used across multiple industries:
  • Jewelry engraving & customization
  • Glass etching and marking
  • Metal surface engraving
  • Wood carving and DIY art

Product highlights

  • The D-102 is engineered with premium materials for durability and precision:
  • Handle Material: Aluminum Alloy → Lightweight, durable, anti-slip, corrosion-resistant
  • Outer Shell: ABS → Impact-resistant and lightweight
  • Grinding Bits: High-Speed Steel (25–30 HRC) → Stable performance for engraving and polishing
  • Ultra-Lightweight & Portable
  • Only 40g, pen-style design
  • Easy one-hand operation
  • Perfect for precision work
  • LED Smart Indicator System
  • Displays speed levels clearly

Configuration & packaging

  • Electric Engraving Pen × 1
  • USB Type-C Charging Cable × 1
  • 2.35 × 45mm Grinding Bits × 30 PCS
  • Grinding heads can be customized:
  • Shapes: fully customizable combinations
  • High-speed steel
  • Tungsten steel
  • Carbon steel (45#)
  • Non-metal (polishing, rubber, cutting)

OEM / ODM options

  • Grey / Silver / Black / Blue / Pink
  • Red / Purple / Gold / Orange / Green
  • Custom colors supported (OEM)
  • We offer full customization solutions:
  • Logo printing (laser / silk screen)
  • Custom packaging design
  • Private label support
  • Color customization
  • Speed tuning
  • Battery upgrade

Order reference

  • Carton Quantity: 80 pcs
  • Gross Weight: 17 kg
  • Carton Size: 54.5 × 41.5 × 43.5 cm
  • 10–15 days for 1000 pcs.

Product FAQ

Why Choose This Electric Engraving Pen?+

Ultra-light (40g) for precision work

What materials can this engraving pen work on?+

Metal, glass, wood, plastic, ceramic, and jewelry.

Can I customize grinding bits?+

Yes, both shape and material can be customized.

Is it suitable for beginners?+

Yes, the 3-speed control makes it user-friendly.

How long does the battery last?+

Approximately 60–90 minutes depending on usage.

Can it work while charging?+

Yes, it supports charging while working.

What is the MOQ?+

500 pcs for standard, 1000 pcs for customization.

Do you support private label?+

Yes, full OEM/ODM service is available.

MODEL REFERENCEElectric Grinder-102

Cordless Rotary Tools · 11 product photographs

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