Achieve a flawless, professional-grade finish on your vessel with the 3M Clean Sanding Hookit Discs 236U. Specifically engineered for the demanding environment of marine maintenance and cleaning, these 5-inch sanding discs are your essential partner for everything from minor repairs to full-scale restoration projects. Elevate the quality of your work while maintaining a cleaner, healthier workspace.An aluminum oxide HookitTM disc with precise hole design for improved dust extraction constructed on a C weight intermediate paper backing.CW Array Hole Pattern.The standout feature of these discs is the revolutionary 3M Clean Sanding technology. Experience a dramatic reduction in airborne dust thanks to the proprietary multi-hole pattern that works in concert with your vacuum-assist random orbital sander. This superior dust extraction capability provides numerous benefits: it creates a cleaner work environment, minimizes post-project cleanup time, and allows for a clearer view of your work surface, ensuring greater precision and control. By keeping the abrasive surface clear of debris, the disc resists loading, significantly extending its functional life and maintaining a consistent cut-rate from start to finish.Engineered with a fine P320 grit, these discs are ideal for the critical final sanding stages before applying paint, varnish, or polish. Use them to smooth primers, scuff existing finishes for optimal coating adhesion, or put the final touches on fairing compounds and gelcoat repairs. The result is an exceptionally smooth, uniform surface free of the swirl marks that can compromise a high-gloss marine finish. The premium aluminum oxide abrasive cuts quickly and evenly, delivering consistent performance you can rely on.Efficiency is paramount in any marine project. The 3M Hookit™ hook-and-loop attachment system enables swift and secure disc changes, minimizing downtime and keeping your project moving forward. The durable C-weight paper backing provides the perfect balance of flexibility and strength, conforming to gentle curves on a hull or deck while resisting tearing during aggressive use. This pack of 50 units ensures you have a plentiful supply for tackling extensive surface preparation tasks, making it a cost-effective solution for boatyards, mobile marine technicians, and dedicated boat owners alike. Choose 3M 236U discs for unparalleled performance in marine surface finishing