The 2UUL DA81 Rechargeable Electric Polish Drill Pen is a professional-grade precision rotary tool engineered specifically for smartphone motherboard repair, micro-soldering, CPU/NAND IC grinding, and delicate logic board cutting. Traditional large rotary grinders often suffer from shaft wobble and heavy vibration, which can easily destroy micro-traces on high-density PCBs. The DA81 solves this with a high-concentricity core motor and vibration-free rotation reaching up to 15,000 RPM, delivering silky-smooth, jitter-free control under the microscope.

Designed with an ergonomic "long gourd" pen-style aluminum alloy body, it fits naturally in the hand to minimize technician fatigue during extended micro-machining tasks. Featuring a 3-speed smart adjustment system and forward/reverse rotation switching, it enables controlled grinding of IC chips without overheating delicate silicon dies, removing stripped screws, cutting motherboard EMI shielding brackets, and polishing bezel edges. Equipped with a universal 2.35mm chuck and modern Type-C USB charging, the 2UUL DA81 brings cordless convenience and workshop-level accuracy to any repair bench.

Key Features

1. Zero-Vibration High-Speed Rotation: Precision concentric motor spins smoothly up to 15,000 RPM without runout, protecting fragile PCB copper tracks and bonding pads.
2. 3-Speed Smart Power Control: Easily switch between low, medium, and high RPM to adapt between soft epoxy underfill removal and hard metal shield grinding.
3. Ergonomic "Long Gourd" Grip: Lightweight aluminum alloy body is contoured for balanced, pen-like precision during long microscope rework sessions.
4. Universal 2.35mm Precision Chuck: Seamlessly fits standard 2.35mm grinding bits, micro-drills, carbide cutters, and polishing heads.
5. Cordless Type-C USB Charging: Built-in rechargeable lithium-ion battery frees the bench from tangled power cords and charges conveniently via 5V USB.
6. Multi-Functional Repair Capability: Includes 5 specialized grinding bits for IC chip layer exposure, screw head slotting, shielding frame cutting, and frame edge deburring.

Specifications

1. Brand: 2UUL
2. Model: DA81
3. Product Type: Mini Cordless Electric Grinding & Polishing Drill Pen
4. Body Material: High-Grade CNC Aluminum Alloy
5. Battery Type: Built-in Rechargeable Lithium-ion Battery
6. Charging Interface: Type-C USB Port (5V Input)
7. Speed Modes: 3-Speed Adjustable Gear System
8. Maximum Speed: Up to 15,000 RPM
9. Chuck Collet Diameter: 2.35 mm (Standard Universal Fit)
10. Rotation Direction: Forward / Reverse Controllable
11. Application: Mobile Logic Board Repair, IC Chip Grinding, Black Glue / Underfill Removal, Shield Cutting, Stripped Screw Removal

Package Includes

1. 1 × 2UUL DA81 Rechargeable Electric Polishing Pen
2. 5 × Precision Grinding Heads / Drill Bits
3. 1 × Type-C USB Charging Cable

Important Notice & Terms

Important Advisory: Please ensure full technical compatibility and model verification before confirming your order. Products listed are sold under a strict No Return, No Exchange, and No Refund policy. Limited technical support is offered where feasible and cannot be guaranteed for every application. Fixtools is not liable for incorrect ordering or damage caused by improper usage; purchasing decisions rest entirely with the customer.