The 2UUL DA82 Polish Drill Pen Tip Set (10 Pcs/Pack) is a comprehensive collection of industrial-grade micro-grinding, cutting, and carving bits engineered specifically for smartphone motherboard repair, micro-soldering, and precision metalwork. Designed for use with rotary grinding pens (including the 2UUL DA81, DA84, DA85, DA86, and standard 2.35mm collet micro-drills), these precision-machined tips provide smooth, vibration-free material removal under high-magnification microscopes.

Featuring a versatile assortment of 5 distinct head geometries across 10 pieces—including needle burs, spherical carving heads, flat cylinder cutters, and edge-profiling tips—the DA82 set is tailored to handle delicate micro-electronic maintenance. Whether you need to slot and extract stripped screws, expose hidden motherboard traces, cut tough steel EMI shielding cans, dig solder pad vias, or chamfer dented aluminum/titanium frame corners, these hardened alloy bits deliver clean, skip-free cutting performance without damaging neighboring PCB components.

Key Features

1. 10-Piece Multi-Profile Assortment: Includes 5 specialized tip profiles (2.5A, 2.5K, 4.0A, 0.8A, 2.0D; 2 pcs each) covering micro-drilling, cutting, slotting, and polishing.
2. Universal 2.35mm Shank Compatibility: Standardized shank fits seamlessly into 2UUL grinder pens and all third-party rotary micro-soldering tools.
3. High-Hardness Wear-Resistant Alloy: Industrial-grade construction maintains sharp cutting edges and resists dulling under continuous high-RPM loads.
4. High-Concentricity Balanced Rotation: Eliminates shaft wobble and jitter under the microscope, preventing accidental gouging of nearby PCB traces.
5. Versatile Mobile Repair Application: Ideal for motherboard shield cutting, stripped screw removal, frame corner restoration, solder pad hole digging, and IC layer grinding.

Tip Profile Breakdown

1. 0.8A (2 Pcs): Ultra-fine needle point for micro-trace exposure, delicate via digging, and tight-clearance pad cleaning.
2. 2.0D (2 Pcs): Spherical ball head for spot-grinding IC underfill, deburring curved edges, and controlled cavity shaping.
3. 2.5A (2 Pcs): Tapered conical tip for precision hole chamfering, corner detailing, and screw head slotting.
4. 2.5K (2 Pcs): Flat cylinder end-mill for smooth level surfacing, track scraping, and bracket trimming.
5. 4.0A (2 Pcs): Broad abrasive head for larger surface polishing, frame edge straightening, and fast shielding bracket cutting.

Specifications

1. Brand: 2UUL
2. Model: DA82
3. Product Type: Precision Rotary Grinding & Polishing Drill Bit Tips
4. Quantity: 10 Pieces per Pack (5 Profiles × 2 Pcs)
5. Included Tip Sizes: 2.5A (×2), 2.5K (×2), 4.0A (×2), 0.8A (×2), 2.0D (×2)
6. Shank Diameter: Standard 2.35 mm
7. Material: High-Grade Hardened Alloy Steel / Diamond-Treated Micro Abrasive
8. Compatibility: Fits 2UUL DA81, DA84, DA85, DA86 and all standard 2.35mm chuck electric grinder pens
9. Application: IC Chip Layer Grinding, Shielding Frame Cutting, Stripped Screw Removal, Solder Pad Hole Digging, Frame & Housing Modification

Package Includes

1. 10 × 2UUL DA82 Precision Grinding Drill Pen Tips (Pack of 10)

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.