Sanding Blocks Sanding Blocks Hard angled blocks available in 2-3/4″ x 3-3/4″ (69x98mm) Soft angled blocks available in 2-3/4″ x 3-3/4″ (69x98mm) Thickness 1″ Micro Fine GradeUltra Fine GradeSuper Fine GradeFine GradeMedium Grade