3M 4 1/2″ X 30″ 750U / 751U HOOKIT GREEN CORPS FAIRING BOARD SANDPAPER SHEETS – These sheets utilize a convenient hook-and-loop attachment system for easy placement on and removal from the tool face. The special mineral coating bonded to a durable “E” weight backing is designed to last long and cut fast when using a 3M Marine Hookit Fairing Board (PNs 83497 or 83978). Resin bonded for heat resistance. Primary markets are metalworking and woodworking. Product is sold by the individual 4-1/2″ x 30″ sheet.