3M Hookit Flexible Abrasive Foam Discs combine flexible aluminium oxide abrasives with a soft foam backing to create a high performing, versatile blending abrasive for wet or dry use by hand or machine. These foam Discs are composed of a soft foam which conforms to irregular surfaces and is comfortable to use by hand. They can be used wet or dry and by hand or machine in blending applications. These discs have excellent cut and finish. 3M Hookit Flexible Abrasive Foam Discs have excellent dust and water control thanks to hundreds of laser perforated holes ensuring a clean, dust free working environment.