Sanding Disc 3M Cubitron II 150mm 240+ Grade P240 Grit 775L 50 in pack

3M Cubitron II sanding disc, 150 mm diameter, P240 grit (775L), pack of 50. This film-backed disc uses 3M Precision-Shaped Grain (Cubitron II) ceramic abrasive to provide consistent, fine finishing and extended life compared with conventional ceramic discs. The disc is designed for use with angle grinders or sanders that accept a 150 mm Hookit backing pad and is suitable for removing rust, preparing metal surfaces and light stock removal on a range of materials.

Advantages

Precision-shaped grain delivers higher initial cut rates and wears evenly to maintain sharpness longer. Film backing increases tear resistance and preserves edge retention during use. The multi-hole pattern helps evacuate debris to reduce clogging and extend disc life. Hookit hook-and-loop attachment enables quick, secure disc changes when used with a compatible 150 mm backing pad.

Suitable for

• Agricultural equipment maintenance
• Construction and site metalwork
• Ship and boat building and repair
• Metal fabrication and surface preparation

Key specifications

• Diameter: 150 mm
• Grit: P240 (fine)
• Series/Type: 3M Cubitron II (775L)
• Backing: Film backing
• Attachment: Hookit (hook-and-loop) — requires 150 mm backing pad (sold separately)
• Pack quantity: 50 discs
• Maximum speed: 10,000 rpm

How to use

Fit the disc to a compatible 150 mm Hookit backing pad on your sander or angle grinder, ensuring the machine is switched off and disconnected from power before mounting. Operate at or below the maximum rated speed (10,000 rpm) and apply steady, even pressure for surface cleaning, rust removal or light stock removal. Replace discs as they wear to maintain consistent finish quality.

Usage recommendations

Use appropriate personal protective equipment — eye protection, gloves and respiratory protection — and ensure operators are trained for safe angle grinder use. For best results on metal and composites, pair the disc with a 3M Hookit 150 mm backing pad (product code 456-2439) and avoid excessive heat buildup by using moderate pressure and allowing the abrasive to do the cutting.