Silicon carbide abrasive with improved resin bond for exceptional finishes in both wet and dry applications and improved waterproof paper backing for better flexibility and wet-curl resistance. 120 grit comes on heavy weight paper (T461), 220 to 600 on light weight paper (T414), and P1200 on slightly lighter weight (T401). Yield long life in rough, wet applications. Measure 9" x 11". Available in 6 grits: 120, 220, 320, 400, 600, and P1200 (a European designation, slightly finer than 600 grit.) Made in Mexico.