Constructed of silicon carbide and provides an excellent finish where a refined wood surface is desired, in most applications it will be less durable than aluminum oxide The open coat feature provides a more aggressive cut than a comparable closed coat abrasive of the same grade and a special loading resistant coating makes this disc a good choice when loading is a problem The A-weight, paper backing is light-weight and flexible and suitable for most general purpose sanding applications
3M 415U Hookit Disc Silicon Carbide Additional InformationProduct Information Bulletin