3M Cubitron™ II Marine Sanding Disc
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
3M™ Cubitron™ II Marine Sanding Disc is built for efficient stock removal and controlled surface prep. With a triangular-shaped ceramic mineral cutting grain and a vacuum-friendly multi-hole pattern, this Hookit™-style disc helps deliver consistent results during marine bottom paint removal and repair work.
Key Features
- Triangular shaped ceramic mineral cutting grain for fast, consistent sanding performance
- Multi-hole pattern supports excellent dust extraction by allowing the vacuum to reach virtually every part of the disc
- Hookit™ attachment system for convenient hook-and-loop disc changes
- Engineered to provide a finer, more uniform finish during prep and repair tasks
Intended Use
- Bottom paint removal and marine coating prep
- Gelcoat repair and surface refinement
- Blister repair and surrounding area sanding
- General surface preparation for marine repairs (when compatible with Hookit™-style sanding systems)
Product Details
- SKU: 71-31374
- Product: 3M Cubitron™ II Marine Sanding Disc
- Attachment system: Hookit™
- Disc design highlights: triangular ceramic mineral cutting grain; multi-hole dust extraction pattern
- Includes: single disc (title/variant indicates disc as the purchasable unit)
Parts Desk Insights
Best Use Case: Ideal for boaters and service crews doing marine sanding/feathering where dust extraction and consistent surface prep matter, such as coating removal and localized repairs.
Common Issues: For best results, verify your sander’s backing/attachment system matches the Hookit™ hook-and-loop format and keep suction aligned with the disc holes. If dust loading reduces cutting, confirm the correct abrasive grade for your target (paint/coating removal vs. finer feather-edging) and avoid excessive pressure.
Related Products & Accessories
- Tools & Installation - Browse sanding tools, backers, and installation accessories for compatible Hookit™-style discs.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.