Specifications Hook & Loop, to be used with 150 mm pads, 100 discs per box, 50 discs per box for P40 and P60. 8 + 6 + 1 holes. High quality Sanding Discs, very well suited for machine sanding at high speeds during all stages of the repair process. Open-coated aluminium oxide abrasives especially prepared for strength and durability. Designed for the car body repair and marine industry for sanding, paints, primers and putties. Benefits of Sanding Discs Premium - High quality, paintable finish; creating a paintable and even finish - Increases productivity; aggressive cutting performance, work more efficient - Durable, resist to clogging; treated to prevent dust accumulation. Result: durable and provides a high quality finish - Fast and consistent performance; high speed in sanding performance, initially and for the disc lifetime - Less dust; hole pattern creates good dust extraction and provides a healthier workshop - The sharp and hard aluminum oxide grains are especially prepared to provide fast cutting results with high removal rates - The unique engineered coating technique of the Sanding Discs prevents accumulation of particles into the abrasive, so it will last longer and gives a consistent high quality finish - Suitable for metal, decoration and wood industry